Let's see......
I found my first grey hair when I was about 28, which contrast sharply with my baby face
Tried to grow my mustache back a few months ago, but when half of it came out grey, shaved it off...
I'll be 32 in June, and I'm seriously, seriously thinking about going to the doctor for a complete physical, just to identify any potential problems before they get out of hand.
5'11'', about 290lbs, eating habits aren't bad (not a lot of junk foods, like chips and candy), but I drink entirely too much soda and coffee. Smoking doesn't help either.
Like I said, I'm gonna visit the old sawbones just to find out what condition I'm in. While I'm still (fairly) young and able to deal with any problems that might arise.
I know what y'all are talking about when you talk about the knees....it's like one day, you wake up, and your joints aged ten years or something.