Ask a football player.

If you are older like I am I have a bit of advice.  Watch several football games and concentrate on the guy with the ball or the tackler who misses him. Pay attention to how they all 'roll' as they are going down.  They don't stick out their arms to catch themselves.  They simply fall and when possible roll.  I swear by this.  Once I managed to fall out of the car even as I was planning to get out in the normal way but didn't!  No, I can't explain what happened.  I was as surprised as the person who was opening my door!  Go down as softly as you can.  Turn yourself into a crumbling heap.  It really does work!...........marge