Working out is No. 3 on the list of most popular daily activities in America, behind not working out and teaching dogs to swear. Spend your time wisely with today's Groupon: for $58, you get two months of unlimited boot-camp classes at Performance Fitness Bootcamp, located at the Jam Dance Academy in Edwardsville (a $394 value).

Kinesiologist and certified strength and conditioning specialist Roger Ernst leads students through Performance Fitness Bootcamp's heart- and muscle-pumping schedule of strenuous boot-camp classes. The 45-minute sessions commence with a brawn-loosening warm-up and engage the entire body in exercises that utilize a wide variety of equipment. Bands and stability balls endow patrons with even, powerful poise, and suspension-training systems and dumbbells activate muscles as effectively as forgetting to return the Hulk's power tools. Strength and resistance training also harnesses body weight and helps to increase metabolism and burn fat. Participants receive a nutrition guide to assist them in adopting healthful habits when eating, exercising, and considering one last gumball-machine heist.