well since the author of the thread in off-topic asked it to be moved (and cuz it's totally derailed), i'll submit the following experience here.
if you have some experience in push hands and then try it high, new doors will open--esp regarding listening.
if you keep smoking too much, other doors will close.
my buddy and i tried it together for the first time in push hands. we were both blown away at how sunk the other felt. reflexes definitely are diminished.