ok I don’t’ really know what this has to do with this section of yahoo answers.. but i will answer anyways.. u probably would have gotten better results in the right category.. but anyways.. they just learn it just like riding a bike or martial arts.. they set their minds to it and learn it and than practice and than do it.. as to flips and stuff that also has to play with flexibility… SO yea there u go.

Discipline of self,bet they go off like firecrackers in bed though.