That sucks. o_o How'd he break it though? I kind of broke my bike once by crashing it into a tree in the woods, it was so embrassing, lol. I think it's better to go outside in the morning, it's way too hot during the noon and afternoon, this time of year.
I tried something similiar today, got some exercise in themorning and went jogging outside, but it wasn't to try to not be lazy - I was wondering what I could to .... lol, be more healthy. I might even join the fitness club at school.
3? That's incredible... =( I think the bike seats can be adjusted to fit taller people, but it's probably better to get a bike that's adult-size if you're already grown. Hmm.