Quote Originally Posted by TenTigers View Post
The increase in bone/tissue density is only one aspect of IP training.
The idea is to develop harder and harder strikes, with less effort.
(Of course it is relaxed. All strikes need relaxation-mass x acceleration= force. If you aren't relaxed, you will not accelerate the strike. You are driving with the parking brake on.)
As you develop harder strikes, the hand must be made harder to be able to withstand the power of your own strikes, otherwise you are striking hard with a weak and unstable weapon. It's pure logic. No mystery, no secret.
Projecting force into the opponent is technique. Learning to pulse your strike, and develop shock power-similar to the pulse used in CPR (the dark side of the Force of CPR:-) is part of the method.
Sure you can call it internal..if you want.
But I prefer to call it what it is; physics.
Rik has *****-slapped the correct and given it the Hung Kuen wedgie of death !