JAS Nutri fit

JET Boston

JKA Revere Athletic Club

JV Fitness

Jazzercise

Jean Appolon Expressions

Jessi’s Virtual Workouts

José Mateo Ballet Theatre

K Foley Global Pilates

K-FIT Studio LLC

KMF Strong

Kaivalya Bodywork

Kaliyuga Dance Studios

Katana Spa

Kimber Fitness

Kinema Fitness - 260 Franklin

Kinema Fitness - One Post Office Square

Kinema Fitness - Rowes Wharf Health Club

Knights Of Columbus - Newton

LS Flamenco

Lea Tam Acupuncture

Level Ground Mixed Martial Arts

Lexington Power Yoga

Lifted Fitness + Performance