It's a learned skill to fall, and to accept falling. Try some ukemi (aikido falls) training. The psychology of falling is fascinating. There are some well don

It's a learned skill to fall, and to accept falling. Try some ukemi (aikido falls) training. The psychology of falling is fascinating. There are some well done videos about the "unbendable arm" on YouTube but if you have a dojo nearby there's nothing like a couple sessions. Another thing is to bend your knees, like, always. A natural but incorrect safety reflex is to extend the legs and lock the knees, which makes you a stick ready to flip over. So, do held squats and get comfortable with the lower center of gravity, which makes you that much more stable and that much safer to fall on your butt.