Beacon Hill Yoga

Beacon Hill Yoga/REPS

Beantown Bootcamp

Beyond Physical Therapy + Pilates

BeyondFit

Big Night Fitness

Bigger Muscles, Better Intentions

Bikes and Beers

Black Crow Yoga

Blissful Monkey Yoga Studio

Body & Brain

Body & Brain

BodyWaves

Bodyscapes Fitness

Boston Athletic Training

Boston Ballet School

Boston Barre

Boston Body

Boston Body

Boston Body Pilates Belmont

Boston Body Pilates East Watertown

Boston Body Pilates Newbury Street

Boston Body Pilates Waterfront

Boston Brazilian Jiu-Jitsu