3 ms·

Do you know what this exercise is called?

• 1e-9 7y ago
  The closest thing I've found is called a "Fist Flex," so I just call this a "Rapid Fist Flex." I adapted it from a rehab exercise I was given after an injury, which instructed you to only do 10 to 20 slow repetitions. Once I was largely recovered from the injury, I found that doing 20 repetitions at a slow rate did little for me, so I experimented and determined that just increasing the rate and exercising to fatigue allowed me to continue to strengthen as effectively as any weight-bearing exercise I had done. I think of it as using acceleration/deceleration to generate force rather than using weights, which is similar to what sprinting does for the legs, core, and arms. Take a look at a 100m sprinter. Rapid movement is very effective at strengthening and it works your full range of motion. If you want some extra resistance, just put your hands underwater in the bathtub when doing it.