Just kidding...

Diet does affect EVERYTHING though. I was on a 6 week road trip several years back...we had been out west climbing and backpacking...eating mostly pasta, veggies, and peanut butter and jelly burritos. We stopped at a steakhouse in the middle of the trip(I LOVE steak)...well I felt SO sluggish and horrible after that meal - it took me two days to feel better, and that was only after about three weeks of not eating meat.