BeyondFit

Big Night Fitness

Bigger Muscles, Better Intentions

Bikes and Beers

Blissful Monkey Yoga Studio

Blue Lotus Healing Arts

Body & Brain

BodyWaves

Bodyscapes Fitness

Boston Athletic Training

Boston Ballet School

Boston Body

Boston Body Pilates Newbury Street

Boston Body Pilates Waterfront

Boston Brazilian Jiu-Jitsu

Boston Dance Studios

Boston Harbor Sailing Club

Boston JCC

Boston Martial Arts and Fitness

Boston Pilates

Boston Pole Fitness

Bouldering Project - Boston

Breathe Studio

BronCore Fitness