yeah...
they have mastered the body.
that is dedication. i wouldn't call it gentle buddhism though ... i would apply that more to another aspect of "buddhism" which lies in the giving something to others or respecting others. but well of course they give their audience and all people they teach a bit of their knowledge of self.
it's a real cool video, it amazes me everytime i see it.
let alone the thing with the jumping and then landing on their backs and then straight jumping on their feet again .... that for sure requires some good concentration and training on the body.
peace