Zumba Fitness
1 of 8There may be no hotter indoor fitness class than this Latin-inspired, calorie-burning activity. No dance experience? That's okay, this form of fitness is easy to learn, and a blast to do.
Kickboxing
2 of 8Based on Martial Arts and stand-up combat sports, kickboxing classes can be a fast way to burn off some calories, and aggression, in a fun, athletic setting.
Pilates
3 of 8Developed by Joseph Pilates in the early 20th Century, this body-conditioning practice is more than just "intense yoga." Pilates classes help build flexibility, muscle strength and endurance, as well as tone your abs to look amazing.
Step Aerobics
4 of 8Originally designed by a trainer looking for an innovative way to recover from a knee injury, step aerobic classes offer a quick cardio workout in a supportive group setting.
TRX Suspension Training
5 of 8The TRX is a suspension system that provides a total-body workout that uses your bodyweight to create muscle-building resistance. And if you needed any more motivation, tons of pro athletes, including NFL QB Drew Brees, us the TRX to recover from injury and boost their performance.
Yoga
6 of 8Yoga is a great opportunity to build muscles, balance, flexibility and much more. It's one of the more popular indoor activities for athletes for a reason.
Kettlebell Class
7 of 8The easy-to-grip weights are all the rage in the fitness industry. After one intense workout, you'll see why.
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