A military-style obstacle course challenges athletes to conquer mud-caked hurdles before celebrating during a race party

Fabric contraptions suspend students from the ceiling as they practice yogic stretches and core-strengthening exercises

Vibrating plates cause intense muscle contractions for more efficient workouts in 10-minute spurts

The strength and conditioning program incorporates squats, weightlifting, jumps, and throwing into workouts of the day

Aerial-fitness instructors lead workshops and introductory classes that suspend students in air with silk ropes and low-trapeze bars.

Trainers eschew traditional routines in favor of CrossFit's intense functional workouts with kettlebells, jump ropes, and pull-up bars

Groups meet three times per week for boot camps led by nationally certified fitness instructors drawing from plyometrics & circuit training

Experienced instructors lead daily classes such as yoga, Zumba, and Turbo Kick

Exercisers of all levels build strength, endurance, and speed during expert-led functional-training workouts

Zumba classes sync energizing Latin dance steps to catchy beats; students pummel pads and bags during boxing and kickboxing cardio workouts