The pen is mightier than the sword, but that’s only because the pen spends three nights per week bench pressing paper clips. Stay in tiptop sharp-object-dodging shape with today’s Groupon: for $59, you get three weeks of unlimited boot camp and a 21-day eating plan from Reshape by Patrick in Greenwich. Through November, fitness militias assemble at Roger Sherman Baldwin Park’s waterfront from 5:30 a.m. to 6:15 a.m. Mondays, Wednesdays, and Thursdays and from 9 a.m. to 9:45 a.m. Tuesdays and Thursdays. Bonus camps are offered on select Saturdays from 8 a.m. to 9 a.m.

Certified personal trainer and licensed nutritionist Patrick Jones tones out-of-shape bodies during his three-week boot-camp program that includes a healthy-nutrition plan. After setting personal-fitness goals, campers can evaporate extra pounds via 45-minute group workouts, which combine aerobic exercise with strength training that uses medicine balls, jump ropes, and beef slabs that need to be pummeled into jerky. Over the course of three intense weeks, anatomies evolve into stronger, fitter, firmer versions of themselves.

In addition to revving body engines with workouts, Patrick advises each camper on a 21-day eating plan that includes weekly shopping lists to create fat-burning meals at home, along with nutrition workshops and seminars that explain why it’s healthier to eat a banana than a stack of fitness magazines. Further encouragement arrives daily in the form of emails, text messages, and prank phone calls from the squad leader.

Patrick Jones is a licensed nutritionist and certified personal trainer who lost 100 pounds in less than six months using the methods he now teaches. Steeped in firsthand knowledge of the obstacles to better fitness, he is uniquely equipped to guide students toward healthier lifestyles. Recently certified as a yoga instructor, Patrick also holds open the door for campers to attend select Tuesday-evening yoga classes.