Mission Hill Yoga

Modern Barre

Modern Barre Fitness Studio

Motion Performance Group

Move2Joy Yoga Studio

Movement Over Everything (MOVE)

Movement Workshop

Movement with Jill

Mozi Foot Spa

Mu-Sa Total Martial Arts

Musicians Playground

MyStryde

Mystic Runners

Naked Feet Yoga

NeuGeneration Lacrosse

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

Next Level Fitness Wellness Winthrop

Nonantum Boxing Club

North End Yoga

November Project

O2 Yoga Studio

Om Namo Center

One Nation Fitness

One Powered Yoga