Ok let me restate the point more clearly: Of course there's _some_ genetics in play; if I was born without arms, a handstand would be very hard -- depending on factors, _maybe_ possible with robotic limbs but doubtful.

My point was, there's nothing genetic about my ability to teach myself the skills. In fact in many cases -- including being born with asthma -- I had to work around weaknesses many of my peers didn't have. I've always had weak balance, so it took me much longer to get used to acrobatics to build up to handstands than my friends. I have innate low blood pressure which means I more easily get dizzy when I handstand if I'm not very particular about how I breathe. In most things, I'm slower to learn them, but I'm generally better at perseverance and structured learning.