Getting in shape, much like speed-reading Russian literature, requires concentration and the strength to forge ahead through painful, protracted inner monologues. Forge ahead toward fitness with today’s Groupon: for $39, you get a 10-session pass to Alpha CrossFit in New Braunfels (a $200 value).

Alpha CrossFit's experienced trainers engage exercisers in rigorous, no-frills group classes that build foundational fitness and strength. A schedule of daily drop-in classes features 45- to 60-minute sessions that imbue bodies with the flexibility of a rubber band, the coordination of a Las Vegas bank heist, and the balance of a well-kept checkbook through exercises such as ring dips, pushups, air squats, and mat sit-ups. Assisting groups of 6–15 exercisers, coaches incorporate personalized attention and realistic goal setting into each workout. The quick, intense regimens are never exactly the same, and focus on exercising the whole body. Boasting a bevy of medicine balls, belts, and athletic amenities, the industrial-style sweat studio includes locker rooms for storing a change of clothes or a fresh hot-dog suit.