Why the name? Prisoners only have a small cell to work with, and while you may never be in the exact same setting (hopefully), sometimes you need a workout that hits every muscle group without needing a lot of space or equipment. Pushups and squats may not be the most exciting moves, but there's a reason they're staples in almost every workout: They work!
Complete this circuit as many times as you can in 15 minutes to burn fat and build lean muscle fast!
10 regular pushups
10 lunges (on each leg)
10 narrow (triceps) pushups
10 jump squats
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These short but powerful plans are perfect for a busy schedule
These fast but powerful workouts are perfect for a busy schedule.
15 Full-Body Workouts Under 15 Minutes