Babies in strollers serve as resistance for power-walking & toning exercises performed as part of one-hour routine designed for moms

Coaches prime newbies in one-on-one session before regular classes sling ever-changing cardio, plyometrics & calisthenics workouts

Colorful lights, live DJ & dance-club classrooms make each class bona-fide party backed by Zumba's traditional Latin-inspired dance steps

Stationary magnetic-resistance cycles simultaneously cultivate riders' physiques & generate green electricity in instructor-led classes

Pro boxer Rene Armijo Jr. knocks out calories with brutally effective array of aerobics classes that emphasize fitness or technique

150+ workout stations hum with clinking weights & whirring treadmills as group fitness studios host 22 classes for all abilities

Latin-dance instructor & personal trainer combines her specialties in one-hour Zumba class, boasting certification from workout's founder

Lifelong instructors & competitive swimmers help kids aged 5–10 become competent swimmers with group lessons in six class levels

Experienced instructors boost energy & self-defense skills in 50+ timeslots per week, with open mat sessions & weights in dog-friendly gym

Intense, sports-inspired boot camps combine climbing, hiking & strength-training exercises to tone bodies & boost energy at 8 area locations