Higher Ground Fitness

Hill House

Hinge Fitness

Inclusive Fitness

InnerCity Weightlifting

Inspire Fitness Studio

Institute of Combative Arts Quincy

Instrumental Yoga

JET Boston

JKA Revere Athletic Club

JP Centre Yoga

Jazzercise

Jean Appolon Expressions

Jenn Weldon Pilates & Fitness

Jessi’s Virtual Workouts

José Mateo Ballet Theatre

K Foley Global Pilates

KRIGSMAN

Kaivalya Bodywork

Kaliyuga Dance Studios

Kinema Fitness - 260 Franklin

Kinema Fitness - One Post Office Square

Kinema Fitness - Rowes Wharf Health Club

Knights Of Columbus - Newton