Hill House

Hometown Sweat

House 403

Inclusive Fitness

Infinity Flexibility & Strength Training

InnerCity Weightlifting

Inspire Fitness Studio

Instrumental Yoga

Intuitive Wellness

JBSC

JET Boston

JP Centre Yoga

Jazzercise

José Mateo Ballet Theatre

K Foley Global Pilates

KOHR Golf

Kaivalya Bodywork

Kaliyuga Dance Studios

Katana Spa

Kinema Fitness - 55 Fitness

Kinema Fitness - One Post Office Square

Kinema Fitness - Rowes Wharf Health Club

Kinema Fitness - SharkNinja

Kinema Fitness - Wolverine Worldwide (MA)