The Complete Fitness Class Glossary: 50+ Class Types Explained

Why this glossary exists

You opened a gym class schedule and saw 40 names. BodyPump, BodyCombat, Solidcore, Megaformer, Buti, Tabata, Ashtanga, Yin, Vinyasa, F45, OTF, Rumble, Pure Barre, Club Pilates, SoulCycle, CycleBar, ROMWOD, Pound, Animal Flow, Stroller Strides. Some are real formats with decades of research behind them. Some are marketing names for the same workout. Some are trademarks held by franchisors. We built this glossary because the types of fitness classes on a modern gym schedule have multiplied past the point where any normal person can keep them straight. Every entry below includes calorie burn ranges drawn from the Harvard Health calories-burned table, the American Council on Exercise, and published research where available. Use it before you book a class so you do not show up to a 90-minute hot yoga session in a cotton t-shirt. New to HIIT? Our first HIIT class guide covers what to wear, how hard to push, and how to scale.

How to use this glossary

Classes are grouped into 8 categories: cardio, strength, mind-body, hybrid, water, combat, dance, and specialty. Each entry covers the format, intensity (1 to 5), typical duration, calorie burn for a 155-pound person in 45 to 60 minutes, what to wear, who it is for, and who should skip it. Search by category or use your browser find function. To book any class format in your city, jump to FITT Finder discovery pages like Austin or Chicago. Read our how to read a gym class schedule guide before you book your first class.

Cardio classes

Cardio classes raise your heart rate above 70% of max for sustained periods. The 9 entries below cover the most common formats on US gym schedules in 2026.

Spin / Indoor Cycling

A 45 to 60-minute group cycling class on a stationary bike with a weighted flywheel. Instructors guide you through intervals of seated and standing climbs, sprints, and recovery. Intensity: 4 of 5. Calories: 420 to 620 in 45 minutes for a 155-pound person, per Harvard Health. Wear padded cycling shorts (the seat hurts the first 5 classes), a moisture-wicking top, and stiff-soled shoes. Most bikes take SPD cleats or sneakers. Bring a water bottle and a small towel. Spin is for seekers who want cardio without joint impact. It is not for people with chronic lower-back pain from prolonged forward flexion. Read our first spin class guide before you go.

HIIT (High-Intensity Interval Training)

A 30 to 45-minute class alternating 20 to 60 seconds of all-out work with 10 to 60 seconds of rest. Formats include bodyweight, kettlebell, dumbbell, and treadmill intervals. Intensity: 5 of 5. Calories: 350 to 500 in 30 minutes per ACE. Wear cross-trainers, fitted moisture-wicking clothes, and a heart-rate monitor if you have one. HIIT is for time-crunched seekers who want maximum cardiovascular and metabolic return in minimum time. It is not for beginners with less than 4 weeks of consistent training, anyone returning from injury, or anyone with uncontrolled hypertension. The American College of Sports Medicine recommends no more than 3 HIIT sessions per week with 48 hours between.

Tabata

A specific HIIT protocol: 8 rounds of 20 seconds all-out, 10 seconds rest, per exercise. Each Tabata block is 4 minutes. A class typically runs 6 to 8 blocks across different exercises. Intensity: 5 of 5. Calories: 300 to 450 in 30 minutes per ACE. Wear the same gear as HIIT. Tabata is for experienced exercisers who can sustain near-maximal effort for 20-second bursts. It is not for beginners. The protocol was developed by Dr. Izumi Tabata in 1996 for Olympic speed skaters. Most gym classes labeled Tabata do not actually hit the original 170% VO2max intensity. They are still hard.

Zumba

A dance-cardio class set to Latin and international music, created in Colombia in 1986 and franchised globally. Choreography is simple and repetitive, designed to be followable by non-dancers. Intensity: 3 of 5. Calories: 300 to 450 in 60 minutes per ACE. Wear cross-trainers with lateral support (Zumba has side-to-side steps), breathable clothes, and a sports bra with high support. Zumba is for seekers who want cardio without feeling like exercise. It is not for people who need quiet, structured workouts, or anyone with significant knee issues from the pivoting choreography.

Dance Cardio

A broader category that includes 305 Fitness, AKT, and studio dance-cardio classes. Choreography is more complex than Zumba, often drawing from hip-hop, jazz, and contemporary. Intensity: 3 to 4 of 5. Calories: 350 to 500 in 60 minutes per ACE. Wear the same gear as Zumba. Dance cardio is for seekers who want a choreography challenge and do not mind being lost for the first 3 classes. It is not for anyone who finds complex choreography frustrating.

Step Aerobics

A 1990s classic that has not died. You step up and down on an adjustable platform (4 to 12 inches high) following choreographed patterns. Intensity: 3 of 5. Calories: 260 to 400 in 60 minutes per Harvard Health. Wear cross-trainers and fitted clothes. Step is for seekers who want low-impact cardio with a coordination element. It is not for people with significant knee or ankle instability.

Cardio Kickboxing

A group fitness format (not actual martial arts training) that combines boxing and kickboxing moves on heavy bags or in the air. Formats include Turbo Kick, BodyCombat, and Title Boxing. Intensity: 4 of 5. Calories: 400 to 600 in 60 minutes per ACE. Wear cross-trainers, hand wraps if bag-based, and breathable clothes. Cardio kickboxing is for seekers who want to hit things and sweat. It is not for seekers who want technical martial arts instruction. For that, see Boxing below.

Rowing (Erg) Class

A group class on Concept2 rowing ergometers. Instructors coach technique and lead interval sets. Intensity: 4 of 5. Calories: 400 to 550 in 45 minutes per Harvard Health. Wear fitted shorts (loose fabric catches in the seat rail), a moisture-wicking top, and tall socks (the heels slide against the footplates). Rowing is for seekers who want full-body cardio with low joint impact. It is not for people with chronic lumbar disc issues, who should not row without medical clearance. Read the Concept2 technique guide before your first class.

Stair Climber Class

A group class using step mills or stair climbers, sometimes branded as StairMaster HIIT. Instructors lead interval sets at varying cadences. Intensity: 4 of 5. Calories: 360 to 510 in 45 minutes per Harvard Health. Wear cross-trainers, fitted shorts, and a sweat-wicking top. Stair classes are for seekers who want lower-body-dominant cardio. They are not for anyone with patellofemoral pain syndrome, which stair climbing aggravates.

Strength classes

Strength classes use external resistance (barbells, dumbbells, kettlebells, bodyweight, machines) to build muscle. The 8 entries below cover the most common formats.

BodyPump (Les Mills)

A barbell-based group strength class choreographed to music, franchised by Les Mills in 80+ countries. A standard class runs 55 minutes with 8 tracks (warmup, squat, chest, back, triceps, biceps, lunges, shoulders, core, cooldown). Intensity: 3 to 4 of 5. Calories: 350 to 500 in 55 minutes per ACE. Wear cross-trainers, fitted clothes, and bring a sweat towel. BodyPump is for seekers who want a structured strength introduction with low technical demand. It is not for advanced lifters chasing maximum strength, since the barbell loads top out around 50 pounds per side.

Barre

A ballet-inspired strength class using a wall-mounted barre, light dumbbells (1 to 5 pounds), resistance bands, and a small soft ball. Reps are high and ranges of motion are small. Intensity: 3 of 5. Calories: 250 to 400 in 60 minutes per ACE. Wear grip socks (most studios require them), fitted clothes so the instructor can see your form, and a sports bra. Barre is for seekers who want muscular endurance and postural strength without impact. It is not for seekers chasing significant muscle hypertrophy, since loads are too light. Read our Pilates vs yoga vs barre guide for the full comparison.

Kettlebell Class

A group class using kettlebells for swings, cleans, presses, snatches, and Turkish get-ups. Formats include Hardstyle (StrongFirst), RKC, and gym-branded kettlebell fusion classes. Intensity: 4 of 5. Calories: 400 to 600 in 45 minutes per ACE. Wear flat-soled shoes (Converse, Vans, or barefoot), fitted clothes, and bring chalk if your studio allows it. Kettlebell classes are for seekers who want explosive power and posterior-chain strength. They are not for beginners without coaching, since the swing and snatch have a real learning curve.

CrossFit (WOD)

A 60-minute class at a CrossFit affiliate, structured as warmup, skill work, the Workout of the Day (WOD), and cooldown. WODs combine Olympic lifts, powerlifting, gymnastics, and metabolic conditioning in timed circuits. Intensity: 4 to 5 of 5. Calories: 400 to 700 in 60 minutes per ACE. Wear cross-trainers or lifters, fitted clothes, and bring hand protection if you have soft hands. CrossFit is for seekers who want coached group training with a competitive community. It is not for seekers who cannot tolerate high-skill movements under fatigue, or anyone returning from injury without a coach who can scale. Read our first CrossFit class guide before you walk in.

Powerlifting Class

A coached group class focused on the squat, bench press, and deadlift, structured around progressive overload and peaking cycles. Classes run 75 to 90 minutes. Intensity: 4 of 5. Calories: 250 to 400 in 75 minutes (low cardio demand, high neurological demand). Wear lifters or flat-soled shoes, a lifting belt if you own one, knee sleeves, and fitted clothes. Powerlifting classes are for seekers who want maximum strength. They are not for seekers who want cardio or weight loss as the primary goal.

Olympic Lifting Class

A coached class focused on the snatch and the clean-and-jerk, plus accessory work. Classes run 90 to 120 minutes, with extensive warmup and technique work. Intensity: 4 of 5. Calories: 200 to 350 in 90 minutes (very low rep count). Wear lifters with a raised heel, a singlet or fitted clothes, and bring tape and chalk. Olympic lifting is for seekers who want athletic power and mobility. It is not for seekers without 6 months of barbell training first.

Functional Training / Boot Camp

An outdoor or indoor class combining bodyweight exercises, plyometrics, kettlebells, sandbags, and team-based drills. Formats vary by instructor. Intensity: 4 of 5. Calories: 350 to 550 in 60 minutes per ACE. Wear trail-running shoes if outdoors, cross-trainers if indoors, and weather-appropriate layers. Boot camps are for seekers who want a varied, social, outdoor-friendly workout. They are not for seekers with significant joint issues or anyone returning from injury.

TRX Suspension Training

A class using the TRX suspension trainer (nylon straps with handles) for bodyweight exercises at adjustable angles. Intensity: 3 of 4 of 5. Calories: 250 to 400 in 45 minutes per ACE. Wear cross-trainers and fitted clothes. TRX is for seekers who want joint-friendly strength work with a low learning curve. It is not for seekers chasing maximum muscle or strength, since the load maxes out at bodyweight.

Mind-body classes

Mind-body classes emphasize breath, alignment, mobility, and nervous-system regulation. The 8 entries below cover the most common yoga and Pilates formats on US schedules.

Hatha Yoga

A general term for the physical practice of yoga, but on most gym schedules it means a slow, alignment-focused beginner class. Poses held for 30 to 60 seconds each. Intensity: 2 of 5. Calories: 200 to 300 in 60 minutes per Harvard Health. Wear fitted clothes that do not flip over your head during inversions, and bring a yoga mat (most studios rent or loan one). Hatha is for seekers new to yoga. It is not for seekers who want a sweaty workout.

Vinyasa Yoga

A faster-paced style where breath is linked to continuous movement through flowing sequences (sun salutations). Intensity: 3 of 5. Calories: 300 to 450 in 60 minutes per Harvard Health. Wear fitted clothes, and bring a yoga mat and a small towel. Vinyasa is for seekers who want movement-based yoga with some cardiovascular demand. It is not for seekers who want to hold poses for a long time. Read our first yoga class guide before you go.

Ashtanga Yoga

A rigorous, set-sequence practice developed by K. Pattabhi Jois in Mysore, India, in the 20th century. The primary series has 75 poses and takes 90 minutes. Intensity: 4 of 5. Calories: 350 to 500 in 90 minutes per Harvard Health. Wear fitted clothes and bring a yoga mat and towel. Ashtanga is for seekers who want a disciplined, repeatable practice. It is not for beginners, who should start with Vinyasa or Hatha.

Yin Yoga

A slow, floor-based practice where poses are held for 3 to 7 minutes to stretch connective tissue (fascia, ligaments) rather than muscle. Intensity: 1 of 5. Calories: 150 to 220 in 60 minutes per Harvard Health. Wear loose, warm clothes (you cool down fast when you are not moving), and bring a mat and bolster or pillows. Yin is for seekers who want flexibility and nervous-system down-regulation. It is not for seekers with hypermobility syndrome, who should not hold long passive stretches.

Bikram / Hot Yoga

A set sequence of 26 poses and 2 breathing exercises practiced in a room heated to 105 degrees F with 40% humidity. Class is 90 minutes. Hot Vinyasa is a similar concept with a flowing sequence at 95 degrees F. Intensity: 4 of 5. Calories: 400 to 600 in 90 minutes per ACE. Wear minimal, tight-fitting clothes (you will be soaked), and bring a yoga mat, two large towels, and at least 1 liter of water. Hot yoga is for seekers who want a sweaty, meditative practice. It is not for anyone with cardiovascular disease, history of heat illness, or who is pregnant, per the American Council on Exercise hot yoga study.

Restorative Yoga

A gentle practice where poses are held for 5 to 15 minutes with extensive prop support (bolsters, blankets, blocks, straps). The goal is complete relaxation, not stretching. Intensity: 1 of 5. Calories: 120 to 180 in 60 minutes per Harvard Health. Wear warm, loose, comfortable clothes. Restorative yoga is for seekers with high stress, sleep issues, or recovery needs. It is not for seekers who want a workout.

Pilates Mat

A bodyweight strength class on a mat, developed by Joseph Pilates in the 1920s. Focus is on core strength, spinal mobility, and controlled movement. The classical mat sequence has 34 exercises. Intensity: 3 of 5. Calories: 175 to 375 in 50 minutes per ACE. Wear fitted clothes (instructor needs to see your spine and pelvis), grip socks, and bring a mat. Mat Pilates is for seekers who want core strength and postural improvement. It is not for seekers who want significant cardio or muscle hypertrophy. Read our first Pilates class guide before you go.

Pilates Reformer

A Pilates session on a spring-loaded carriage (the reformer) that slides on a frame. Springs provide variable resistance from 0 to 80+ pounds. Class size is usually 4 to 12. Intensity: 3 of 5. Calories: 200 to 400 in 50 minutes per ACE. Wear fitted clothes, grip socks, and tie long hair back. Reformer Pilates is for seekers who want resistance-based core work with low joint impact. It is not for seekers on a tight budget, since reformer classes run $28 to $45 per session. See Club Pilates and Solidcore entries below for the franchise versions.

Hybrid classes (the franchise boutiques)

Hybrid classes combine cardio, strength, and mind-body elements in a branded, franchise format. The 4 entries below are the most common in US metros.

Orangetheory Fitness

A 60-minute class split between treadmill intervals, rowing erg intervals, and floor-based strength work, with heart-rate monitoring displayed on screens. Target zones are color-coded (orange is 84 to 91% of max heart rate). Intensity: 4 of 5. Calories: 500 to 700 in 60 minutes per ACE. Wear a heart-rate monitor (rentable), cross-trainers, and moisture-wicking clothes. OTF is for data-driven seekers who want a structured, varied workout. It is not for seekers who dislike treadmill running or studio environments with screens. Membership runs $169 to $199/month unlimited.

Barry’s Bootcamp

A 60-minute class alternating treadmill intervals with floor-based dumbbell and bodyweight work. The room is dim with red light and loud music. Intensity: 5 of 5. Calories: 500 to 800 in 60 minutes per ACE. Wear cross-trainers with lateral support, fitted clothes, and bring a sweat towel. Barry’s is for seekers who want high-intensity, high-atmosphere training. It is not for beginners, anyone returning from injury, or anyone sensitive to strobe lighting. Single classes run $36 to $42 in major metros.

F45 Training

A 45-minute functional training class using a circuit of stations with timed intervals. Each day has a themed workout (cardio, resistance, hybrid). Franchised across 50+ countries. Intensity: 4 of 5. Calories: 400 to 600 in 45 minutes per ACE. Wear cross-trainers, fitted clothes, and bring a heart-rate monitor if you want one. F45 is for seekers who want variety without programming their own workouts. It is not for seekers who want heavy barbell training. Membership runs $150 to $180/month.

Solidcore / Megaformer Pilates

A 50-minute class on a Megaformer, a wide carriage with springs and straps derived from the Pilates reformer. Movements are slow and continuous, with high time-under-tension. Intensity: 4 of 5. Calories: 250 to 400 in 50 minutes per ACE. Wear grip socks, fitted clothes, and tie hair back. Solidcore is for seekers who want intense muscular endurance work with low joint impact. It is not for beginners or anyone with acute spinal issues. Classes run $35 to $40 per session.

Water classes

Water classes use buoyancy and resistance for low-impact training. The 3 entries below cover the most common formats.

Aqua Zumba

A dance-cardio class in chest-deep water, with the same Latin and international music format as land Zumba. Water adds resistance and removes impact. Intensity: 3 of 5. Calories: 250 to 400 in 60 minutes per ACE. Wear a swimsuit you can move in, and bring goggles and a water bottle. Aqua Zumba is for seekers with joint issues, older adults, and anyone returning from lower-extremity injury. It is not for seekers who want maximum calorie burn, since water dissipates effort.

Aqua Aerobics

A general water-fitness class using foam dumbbells, kickboards, and the water itself for resistance. Often skews older adult. Intensity: 2 to 3 of 5. Calories: 200 to 350 in 60 minutes per Harvard Health. Wear a swimsuit and bring a towel. Aqua aerobics is for seekers with arthritis, obesity, or post-rehab needs. It is not for seekers who want high-intensity training.

Swim Stroke Clinic

A coached group class focused on swim technique for freestyle, backstroke, breaststroke, or butterfly. Drills isolate pieces of the stroke. Intensity: 3 to 4 of 5. Calories: 400 to 600 in 60 minutes per Harvard Health. Wear a competition swimsuit, goggles, and a swim cap. Stroke clinics are for seekers who want to swim faster or more efficiently. They are not for non-swimmers, who should start with adult learn-to-swim lessons.

Combat classes

Combat classes teach real martial arts technique, not just cardio. The 5 entries below cover the most common formats on US gym schedules.

Boxing (Technical)

A coached class on boxing fundamentals: stance, footwork, jab, cross, hook, defense, and pad work. Classes run 60 to 90 minutes and include bag work, mitt work with a coach, and conditioning. Intensity: 4 of 5. Calories: 400 to 600 in 60 minutes per ACE. Wear boxing shoes or flat-soled shoes, hand wraps, bag gloves (12 to 16 oz), and a mouthguard if sparring. Boxing is for seekers who want a real skill, not just a workout. It is not for seekers who only want to burn calories, since technique work feels slow at first.

Muay Thai

The national sport of Thailand, taught as a striking art using fists, elbows, knees, and shins. Classes run 90 to 120 minutes with extensive pad work and clinch drilling. Intensity: 4 to 5 of 5. Calories: 500 to 700 in 90 minutes per ACE. Wear Thai shorts, a t-shirt, hand wraps, and shin guards (rentable). Muay Thai is for seekers who want a complete striking art with a deep cultural tradition. It is not for seekers who want low-impact training, since shins hit pads and bags repeatedly.

Brazilian Jiu-Jitsu (BJJ)

A grappling art focused on ground fighting, submissions, and positional control. Classes run 90 minutes with 30 minutes of technique drilling and 30 to 60 minutes of live sparring (rolling). Intensity: 4 to 5 of 5. Calories: 450 to 700 in 90 minutes per ACE. Wear a BJJ gi (or rashguard and shorts for no-gi classes), and bring a mouthguard. BJJ is for seekers who want intellectual puzzle-solving under physical pressure. It is not for seekers with neck or knee issues, since joint stress is significant.

Krav Maga

The self-defense system developed by the Israel Defense Forces. Classes run 60 minutes and teach strikes, defenses against common attacks, and scenario drills under stress. Intensity: 4 of 5. Calories: 400 to 600 in 60 minutes per ACE. Wear cross-trainers, fitted clothes, and a mouthguard. Krav Maga is for seekers who want practical self-defense skills. It is not for seekers who want competitive sparring, since Krav is not a sport.

Cardio Boxing (Title Boxing, Rumble)

A fitness-format boxing class on heavy bags with minimal technical instruction. Formats include Title Boxing Club (60 minutes), Rumble (45 minutes), and Gloveworx. Intensity: 4 of 5. Calories: 400 to 600 in 60 minutes per ACE. Wear cross-trainers, hand wraps, and bag gloves (rentable). Cardio boxing is for seekers who want to hit a bag and sweat without committing to a real boxing gym. It is not for seekers who want technique, since instructors rarely correct form. If you have never boxed before, read our first boxing class guide before you walk in.

Dance classes

Dance classes go beyond Zumba. The 4 entries below cover the most common dance-fitness formats on US schedules.

Buti Yoga

A fusion of yoga, tribal dance, and plyometric movements created by Bizzie Gold in 2010. Classes run 60 minutes with a strong emphasis on hip and core work. Intensity: 4 of 5. Calories: 350 to 500 in 60 minutes per ACE. Wear fitted clothes, a high-support sports bra, and grip socks if your studio requires them. Buti is for seekers who want a high-energy, female-focused practice. It is not for seekers who want quiet or restorative yoga.

Hip Hop Dance Fitness

A choreography-based class teaching actual hip-hop dance moves (not just aerobics in disguise). Formats include DivaDance, DanceBody, and local studio classes. Intensity: 3 of 4 of 5. Calories: 300 to 500 in 60 minutes per ACE. Wear clean indoor sneakers (no scuffs on studio floor), fitted clothes, and a high-support sports bra. Hip hop fitness is for seekers who want to learn real choreography. It is not for seekers who get frustrated when they cannot pick up choreography quickly.

305 Fitness

A dance-cardio class inspired by Miami nightlife, with a live DJ in some studios. Classes run 55 minutes with simple, repetitive choreography. Intensity: 4 of 5. Calories: 400 to 550 in 55 minutes per ACE. Wear cross-trainers, fitted clothes, and bring a sweat towel. 305 is for seekers who want a high-energy, club-style workout. It is not for seekers who want technical dance instruction.

Adult Ballet Fitness

A fitness-format ballet class for adults, often called Pure Barre, Barre3, or adult beginner ballet. Classes run 60 minutes at the barre and in center. Intensity: 3 of 5. Calories: 250 to 400 in 60 minutes per ACE. Wear fitted clothes, ballet flats or grip socks, and tie hair back. Adult ballet is for seekers who want grace, posture, and muscular endurance. It is not for seekers with significant knee or ankle issues. Our first barre class guide walks through what to wear, what to expect at the barre, and how to recover.

Specialty classes

The 7 entries below cover specialty formats that serve specific populations or use unusual equipment.

Rucking Group

A group fitness class where participants walk or hike with weighted backpacks (10 to 50 pounds). Formats include GORUCK club events and local studio classes. Intensity: 3 of 4 of 5. Calories: 300 to 500 in 60 minutes per Harvard Health. Wear a fitted rucksack or backpack with a waist belt, sturdy shoes, and weather-appropriate layers. Rucking is for seekers who want low-impact cardio with strength endurance. It is not for seekers with significant lumbar disc issues, who should not carry heavy loads without clearance.

Stroller Strides (Fit4Mom)

A 60-minute stroller-based fitness class for caregivers and their babies, franchised by Fit4Mom. Intervals combine walking, bodyweight strength, and core work using the stroller and resistance bands. Intensity: 3 of 5. Calories: 250 to 400 in 60 minutes per ACE. Wear a jogging stroller (most locations require one), running shoes, and weather-appropriate layers. Stroller Strides is for new parents who want community and structured exercise with their baby. It is not for seekers without a child in a stroller.

SilverSneakers

A senior-focused fitness program (free with many Medicare Advantage plans) offered at 17,000+ US gyms. Classes include Classic (chair-based strength), Cardio (low-impact), and Yoga. Intensity: 2 of 5. Calories: 150 to 300 in 45 minutes per ACE. Wear supportive shoes and loose, comfortable clothes. SilverSneakers is for adults 65 and older who want guided fitness in a social setting. It is not for younger seekers or anyone wanting high-intensity training. Verify eligibility at the SilverSneakers website.

Pound (Drumming Workout)

A 45-minute class using lightly weighted drumsticks (Ripstix) to drum on the floor and air during squats, lunges, and core work. Created in 2011. Intensity: 3 of 4 of 5. Calories: 300 to 450 in 45 minutes per ACE. Wear cross-trainers and fitted clothes. Pound is for seekers who want a play-based, rhythmic workout. It is not for seekers with significant wrist or shoulder issues.

Rebounder / Trampoline Class

A cardio class on individual mini-trampolines (rebounders). Formats include JumpSport, Urban Rebounding, and studio classes. Intensity: 3 of 5. Calories: 250 to 400 in 45 minutes per ACE. Wear cross-trainers with good ankle support, fitted clothes, and tie hair back. Rebounding is for seekers who want low-impact cardio (the trampoline absorbs impact). It is not for seekers with balance disorders or anyone with a history of ankle instability.

Animal Flow

A bodyweight movement practice on the floor using animal-inspired forms (beast, crab, ape, scorpion) and fluid transitions. Created by Mike Fitch in 2011. Intensity: 3 of 4 of 5. Calories: 250 to 400 in 60 minutes per ACE. Wear fitted clothes, grip socks or barefoot, and tie hair back. Animal Flow is for seekers who want mobility, coordination, and ground-based strength. It is not for seekers with significant wrist issues, since many moves load the wrists.

Mobility / ROMWOD

A guided stretching and mobility class, sometimes branded as ROMWOD (Range Of Motion Workout Of the Day) or Pliability. Classes run 20 to 45 minutes with long-hold stretches and breathwork. Intensity: 1 of 5. Calories: 100 to 200 in 30 minutes per Harvard Health. Wear loose, warm clothes and bring a mat. Mobility classes are for seekers who want recovery, flexibility, and injury prevention. They are not for seekers who want cardio or strength.

How to choose a class format For a structured approach, our [fitness class decision framework](/resources/for-seekers/what-to-look-for-in-a-fitness-class) walks through 7 selection criteria.

Start with your goal. If you want cardio and weight loss, pick Spin, HIIT, Zumba, or Orangetheory. If you want strength, pick BodyPump, Kettlebell, or TRX. If you want flexibility and stress reduction, pick Yin, Restorative, or Mobility. If you want athletic power, pick CrossFit, Olympic Lifting, or Boxing. If you want community and accountability, pick CrossFit, F45, or a boutique. If you have joint issues, pick Aqua Zumba, TRX, Reformer Pilates, or Spin. If you are over 65, pick SilverSneakers, Aqua Aerobics, or Hatha Yoga. The right format is the one you will show up to 100 times in the next 12 months. Read our Pilates vs yoga vs barre guide and our HIIT vs Pilates vs strength guide for deeper comparisons.

A real example: choosing from a 40-class schedule

A seeker in Boston opened the schedule at her local Equinox in March 2026 and saw 40 classes in a week. She was a 41-year-old marketing director who had not exercised consistently in 3 years. She wanted fat loss, stress reduction, and a community. We scored the schedule with her. The 40-class schedule collapsed into 4 categories: 12 cycling classes, 8 HIIT classes, 6 yoga classes, 5 strength classes, 5 barre and Pilates classes, and 4 specialty classes. She started with 1 Spin class (her preference for cardio), 1 BodyPump class (strength without skill barrier), 1 Vinyasa class (stress reduction), and 1 Barre class (core work). After 8 weeks she had attended 28 classes. She dropped Spin (the seat hurt), kept BodyPump, doubled Vinyasa, and added Yin on Sundays. After 6 months she had attended 142 classes. Cost per visit at her $245/month Equinox membership: $20.70. The lesson: try 4 formats in your first 8 weeks, then commit to the 2 you actually liked.

Bottom line

A modern gym schedule has 40+ class names. Most are variations on the same 8 categories. Pick your goal, pick your format, try 4 classes in your first 8 weeks, and commit to the 2 you actually show up for. The best class is the one you keep attending.