When you are younger you tend to overtrain and you don't realize it because you're so high on adrenaline and stuff.

I was a gym rat and I always thought that was a part of my success.

When you are younger you tend to overtrain and you don't realize it because you're so high on adrenaline and stuff.

I think guys overtrain and they burn out. And also just knowing what your body needs. Again, I think rest is really important.

When I came into the league in '85, the regimen for working out was just basic, and as I got older it became more about the core and keeping your body in balance.

Guys are faster, they're bigger and they're stronger. I think that's probably the main thing. And that's not just in football, I think it's in every sport.

Guys get injuries and there's a reason why these injuries happen. A lot of time you're going to get your knee injuries and your ankle injuries, but sometimes if a guy's back is hurting it might be because his core isn't balanced with his back.