Geerr

[WonderTastic]

Do sports increase your testrosterone (can't spell)... cause the guys in sports be acting all hard and stuff

[Kujiro]

I think its possible, considering that the body metabolizes faster with activity, hence so does cell regeneration and cell reproduction.

I am no MD, but if we look at it at a theory level, its possible.
But i think the testosterone production varies from person to person.

[Unlucky_Leprechaun]

Its been documented that testosterone assists in athletic performance, but I'm not sure about sports increasing testosterone levels but when I googled it, I found the following article...believe it if you want to....
http://www.ergo-log.com/traintest.html

[Giles]

They're "acting all hard and stuff" because they're arse holes.. Probably doesn't have any thing to do with their testosterone levels.

[megaman]

the reason theyre in sport is probably to do with already high levels of testosterone as it increases muscle and therefore performance

[VamosToro]

I think that's just being a jock, and an arse like Giles said.