The mind games that you go through the last few weeks before a show really take a toll too. Especially if you go from 198 lbs, feeling pretty fokken powerhouse to 170 lbs feeling like Stephon Erkel.
The hardest part for me has always been the eating. Getting in enough protein and good calories at the right times is essential, but then it seems like you're always eating.
Then to really mess things up, my body reacts differently to food now than it did when I was in my 20's and 30's.