Trainers lead members through nine workout stations that combine boxing-infused cardio, anaerobic, and resistance-training exercises

Kids bound across several giant bounce houses and obstacle courses inside an indoor sports facility

Hungary-born bodybuilder helms studio with aerial yoga sessions, a quartet of boot camps, and focused cardio classes

Certified instructors lead high-intensity workouts filled with functional movements that build strength, endurance, and agility

CrossFit-certified instructors lead varied, high-intensity strength and conditioning workouts to enhance strength, endurance and speed

Passes grant women total access to group classes and workout equipment; Zumba participants spend one hour dancing to Latin beats

Unlimited access to cardio training room, free weights, dumbbells, and resistance-training machines

Trainers lead cardio-kickboxing, Zumba, and mixed-martial-arts classes or coach clients one-on-one in martial-arts skills or general fitness

Certified coaches lead small groups in functional-fitness workouts and fat-loss regimens that include free weights and indoor cycling

Group cycling, yoga sessions, and martial-arts-and-boxing hybrid classes; free weights, treadmills, and ellipticals