Originally posted by: vi_edit
I'm almost 30 and my strength has never been better.  Several friends that are my age report the same.
What does suck is that you tweak muscles a hell of a lot easier now than we did 10 years ago.  Plus you wake up feeling a hell of a lot more sore the next day than we did then too.  
My lungs are in great shape and I can run up and down a basketball court for hours without problems.  I haven't lost anything *yet*, but I certainly pay more for the punishment the next day.