Just be glad that you guys are older then me. I'm 24 and have been suffering with the same acks and pains since I was in my mid-teens. Sucks balls! I hurt my back when I was 11 trying to lift my quads quad up. I saw him do it and thought that it wasn't that bad. Then I tried when he wasn't looking. Back is still messed up to this day. I couldn't even lightly jog in gym class for 3 weeks. I've taken some nasty spills off of horses at speed (about 35mph) and have pummled the **** out of my body. Gotten slammed so hard by other riders in my sport that I've had bruises encompase my whole thigh, wind knocked out of me, you name it... Never broken a bone in life, how idk, but I've ****** up joints and ligaments pretty bad. Cracked some ribs probably, taken 2x4s to the face on more then a couple occasions, drill bits through body parts, fish hooks through body parts, big honkin splinters through body parts, crunched fingers, skin ripped from my arms/hands, 3rd degree burns... the list goes on. I walk down the hall and you hear my knees and hips crack! lol. Matter of fact, if you put your hand on my knee, and I flex it, you can feel the roughness and damage in it.