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 $25, you get 20 group fitness classes at Dana’s Body-Zone in Bellevue (a $158 value).

Helmed by certified trainers, Dana’s Body-Zone cultivates a supportive, social environment for getting fit in more than 30 weekly classes. Designed for students of all genders, fitness levels, and skill sets, most workouts brim with inspiring music and booming encouragement to floss every day. Group Groove torches calories with an hour of club-style shimmies and Latin-inspired hip swivels, and Group Kick punches stress in the kisser with martial-arts and boxing drills that tone the arms and abs. Saddled with stationary bikes and heart-rate monitors, spinning students pedal toward cardiovascular endurance and making thighs more powerful than a monster truck holding political office. Relaxing poses from the yoga and Pilates traditions build long, limber muscles at each Group Centergy session, and instead of lifting hippos to build fat-fighting muscle mass, Group Power students press and curl barbells for 60 minutes.