Athletes flock to Lifefit Kickboxing's more than 10 locations, which are scattered throughout New York and New Jersey, for a seemingly oxymoronic combination: expert combat training and a sense of camaraderie. As instructors help students perfect kickboxing's core moves on the studio's punching bags, they encourage them to view their fellow classmates as teammates instead of opponents or evil henchmen. The result? A welcoming atmosphere that helps keep students motivated as they conquer the calorie-torching, full-body workouts.