
Put any comfortable shoe on your left foot. Then, repeatedly, tap it quite hard with your heel on the ground.
After several taps, you will surely don’t hurt your foot but feel the shockwave all along your leg up to your knee and back… |

Then repeat the test with the other foot, this time, using a NOENE innersole in the shoe (ask a friend to borrow one pair).
After several taps, of course, you will have full feeling of the shock but never will you feel the shockwave along your leg/knee and back. |