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Have him check it out. These are interesting push-ups. I found the motion really challenging at first, but once you get used to it and build up a little strength, your body acts like a cantilever and pulls you around. They’re fun. I still can’t quite do the level three push-up on my left side because my wrist isn’t up for it, but as it gets stronger, I get closer to being able to pull that move off.

If your son tries them, just tell him to go slowly. I’ve fallen over a couple times in the process of learning the three phases.