The word gymnasium derives from the Greek γυμνός (naked), which is how the ancient Greeks preferred to ellipticize and the reason many Americans subconsciously avoid the gym. Today's Groupon gives new customers all the benefits of the gym without much of the nudity: for $25, new members get a three-month membership, waived enrollment fee, and 24-hour key-card access at Snap Fitness (a $175 value). This Groupon is valid only at the Miamisburg location.

With the 24-hour-access key card, perspective perspirerers don't have to let The Man tell them when to help themselves to Snap's top-of-the-line cardio and strength equipment. Arrive at Snap super late and pretend you're working out in an Edward Hopper painting, or pound the treadmill at 4 a.m. and get pumped to host a morning shock-jock radio show. Even fitness fiends who exercise during conventional hours can bask in Snap's friendly, unintimidating atmosphere that provides a refreshing change of pace from meat-market gyms and tough elementary-school weight rooms. The cardio chieftains at Snap Fitness will provide you with online training to help your meet your fitness goals, and the online meal plans help clients temper out-of-control lycra-eating habits.