American Academy of Personal Training Boston

Asana Charlestown

B&S Fitness

B/SPOKE Studios

B3 Fitness

BDY SQD

BURN Fitness Studios

Back Bay Yoga Union

BackYahd Boston

Bad to the Barre

Balans

Barre & Soul

Barre Groove

Bcycle Swampscott

Be the Light Yoga Studio

Beacon Hill Yoga

Beacon Hill Yoga/REPS

Beantown Bootcamp

Bhakti Bodhi Yoga

Big Night Fitness

Bikes and Beers

Bilancia Fitness

BodyWaves

Bodyscapes Fitness