Releasing sweat is an effective way to lower body temperature, as is taking a cold shower or swallowing an igloo. Keep your physique regular with today's Groupon: for $10, you get a two-month gym membership and free fitness classes at Powerhouse Gym (a $118 value). Choose between the following locations: Saline or Ypsilanti.

Powerhouse Gyms ferry fitness seekers to their goals with a host of exercise equipment while experienced trainers tune up fat-burning engines in a plethora of free fitness classes. Beginning bench pressers and workout wizards alike can rev their muscle motors with free weights, weight-training machinery, and cardio equipment outfitted with personal flat-screen TVs to help make workouts fly by quicker than a hummingbird in a tornado. Gym membership also grants unlimited access to group fitness classes; Saline's schedule is packed with courses such as Pilates, Boot Camp, Cardio Kickboxing, and Yoga Fusion, which helps practitioners relax, stretch tendons, and rectify posture. Powerhouse Ypsilanti keeps hearts healthy with classes such as Latin-dance-inspired Zumba, spinning sessions, and kickboxing group workouts.

The 13,000-square-foot facility at the Saline location replenishes electrolyte-depleted patrons from the juice bar and returns sweat-soaked guests to freshness in locker rooms with individual showers. Both locations offer childcare for exercising parents or cartoon dog nannies.