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.

$55 for Month of Unlimited Boot-Camp Classes (Up to $180 Value)

In one-hour boot-camp sessions, participants build their strength and stamina through floor exercises, balance and resistance training, and obstacle courses littered with exercise balls, rope ladders, and professional wrestlers. Instructors watch closely before handing out individual coaching and nutrition advice that accounts for each participant’s athletic progress. D1 Sports Training’s Franklin location, which is co-owned by Peyton Manning, hosts the high-intensity workouts in an expansive indoor facility, complete with a turf field.

Though D1 Sports Training sometimes features a discounted price online, this Groupon still offers the best deal available.