Q: Mike, I'm planning to run a 21 kilometer race on may. I'm kind of thin, so I need to prepare myself the best way.. I guess that means a really good diet to support all the cardio I'm going to be doing since I don't want to loose that much mass.. what do you recomend? thanks.

A: Eat a carbohydrate-rich diet -- at least 60% of calories coming from carbs. Try to especially 'carb-load' the night before the big run and the last meal before the run (unless that makes you queezy, of course). Also have a carb-rich meal after the run. Eat enough to not lose weight. Try to get used to drinking gatorade-type drinks and/or eating energy bar during the actual run. Always keep yourself hydrated. Good luck!