Field cannot be empty.

i go to the gym for the weirdest reason i guess.
ive had a very rare syndrome my whole life and it caused my kneecap to pop out everytime i bent my knee. (a condition that many people (even withouth the syndrome) have called a luxating kneecap)
anyhow
11 years old and the kneecap got stuck on the side of my leg which got my parents troubled.
1 year later turned out keeping the kneecap there(i could still walk) would eventually fuck up my bone and put me into a wheelchair,
so 12 years old me went to the hospital and had an operation good recovery and shit
kneecap secured with surrounding muscle (FORESHADOWING), now 17 and going to the gym twice every week, since i was about 14 because as it turns out if my muscles weaken to much my kneecap will push against them and cause a weird feeling.
and if my muscles were to weaken beyond that point they would probably not be able to contain my kneecap, and it would put me right into a wheelchair anyway.

I dunno about you, but I go to the gym to get in shape. o.O