something is physically wrong with him
When he does a punch or kick, it appears to be so much strain on him. Granted he is tall guy.
Its obvious he has never done yoga, but it appears he is really struggling with movement.
I cant be the only one to notice this, its very clear in his recent movies, but go all the way back to start its even visibile there.
I never expect him to have the dextroxisty of a gymnast like Jet Li, but someone who has been famous for action/fighting films this is clearly a problem.