BREATHE Cambridge

BURN Fitness Studios

Back Bay Yoga Union

Bad to the Barre

Balans

Barre & Soul

Barre Groove

Barre N9NE

Barre N9NE Studio

Bcycle Swampscott

Be the Light Yoga Studio

Beacon Hill Yoga

Beacon Hill Yoga/REPS

Beantown Bootcamp

Beverly Athletic Club

Beyond Physical Therapy + Pilates

Bhakti Bodhi Yoga

Big Night Fitness

Bikes and Beers

Bilancia Fitness

Black Crow Yoga

Body & Brain

Body Ambition

Body Works