Mo's Martial Arts

Modern Barre

Modern Barre Fitness Studio

Motion Performance Group

Movement Over Everything (MOVE)

Movement with Jill

Mozi Foot Spa

Mrbstyles Salsa Fit

Musicians Playground

MyStryde

Naked Feet Yoga

New England Conservatory of Music Preparatory School and School of Continuing Education

New Vision Academy of Jiu Jitsu

Next Level Factory

Next Level Fitness Wellness Winthrop

Nonantum Boxing Club

North End Yoga

November Project

O2 Yoga Studio

Om Namo Center

One Life Physique

One Nation Fitness

Oom Yung Doe

Oom Yung Doe