Institute of Combative Arts Quincy

Instrumental Yoga

JBSC

JET Boston

JETSET Pilates Wellesley

JLW MEDICAL MANAGEMENT CONSULTING

JP Centre Yoga

Jazzercise

Jean Appolon Expressions

José Mateo Ballet Theatre

K Foley Global Pilates

Kaivalya Bodywork

Kaliyuga Dance Studios

Karuna Nutrition & Movement, LLC

Kinema Fitness - 260 Franklin

Kinema Fitness - 55 Fitness

Kinema Fitness - One Post Office Square

Kinema Fitness - SharkNinja

Kinetic Dance Studio

Kink Pilates

Knights Of Columbus - Newton

LEVO

LIFE Health and Fitness Center

LS Flamenco