I used to rock climb until about 11 years ago. I was hanging off a granite face up in Utah when a large boulder decided it wanted to escort me a couple hundred feet down the face. I managed to get clear by going on belay and jumping to the side (thank heaven I was top-roped on the pitch). As I was swinging back and forth, happy to be in the air instead of the ground, it was revealed to me that I was no longer immortal. I gave up climbing that day.