Heck, I'm Brazilian and it feels like 50% of males I know developed knee problem in their late 30s/early 40s Almost all of them were weekend football (court, no

Heck, I'm Brazilian and it feels like 50% of males I know developed knee problem in their late 30s/early 40s Almost all of them were weekend football (court, not grass) players. The others were week day players as well Me, like the good nerd, I am developed back problems instead