ugh, my list is kind of long. Pretty much anything that involves upper body strength and flexibility. I would love to be able to do things like back handsprings and flips, but I just cant move right to do it. I have scoliosis and had a spinal fusion when I was 15, meaning that about 80% of my spinal column is one solid piece. It hasnt stopped me from some dance, (couldn't do ballet really after) horseback riding, cycling, hiking and rock climbing, and various other things that make my surgeon cringe, but I can't bend over enough to touch my toes, or do normal "proper' situps. I've tried snowboarding, but I just can't rotate my body enough to find my balance. my right shoulder also dislocates VERY easily, so I get nervous about things like cartwheels that put stress and weight on my shoulders.