In Motion Dance Center

Indigo Pilates

Indigo Yoga Studio

Infinite Soul

Innerstellar Pilates & Yoga Studio

InterKinected

Iron Horse Fitness and Sports Performance

Iron Therapy Gym

Iyengar Yoga

Jay Marchi Personal Training

Jazzercise

Jazzercise

Jazzercise

Jazzercise Concord at DA Dance

Just Be Yoga

Just Be Yoga and Meditation

JustRide Studio

KIDS GYM BERKELEY

KO1 Fitness

Kahala Studio

Kaia FIT Walnut Creek

Kamasajei BioDynamics and Massage

Kids 'N Dance 'N Theater Arts

Kokko Wellness