Even those who walk to work every day have a hard time staying in shape, due to the prevalence of tempting donut shops and alleyways teeming with stuffed armchairs. Sit-up, not down, with this Groupon.

The Deal

$69 for one month of unlimited boot-camp classes (up to $180 value)

In one-hour small-group boot-camp sessions, participants build their strength and stamina through floor exercises, balance and resistance training, and obstacle courses covered with exercise balls, rope ladders, chains, bands, and tires. Instructors watch closely before handing out individual coaching and nutrition advice to motivate and account for each participant’s athletic progress. Benefits can include weight loss, increased flexibility and endurance, and enhanced strength and core power, plus the satisfaction and accountability of completing a tough workout. D1 Sports Training’s Knoxville location, which is co-owned by Peyton Manning, hosts the high-intensity workouts in an expansive indoor facility, complete with a turf field.