Great article. A couple of additions:
1) There's some research suggesting that (mostly) carbohydrates and (some) protein immediately after a muscle-building exercise (like weight training) is helpful in maximizing strength and power gains in recovery. (Current thinking is that it's not just excercise that increases muscle development, but recovery after that exercise.)
2) There's some research suggesting that caffein is a serious performance enhancing substance on the day of athletic performance, but only (dang) if you avoid caffein for six weeks prior to the event. (Good luck with that...)
3) There's some recent research suggesting that low-fat chocolate milk is a better beverage during a break between bouts of training than a sports drink. (Interestingly, for years, I've always gotten a craving for chocolate milk when I ski, even though I almost never think about it otherwise.)
4) Hydration--One of the great mysteries of modern physiology (which will be explained only when they come up with a unified field theory and also explain why red wine spills occur more often when there's something near that's light colored and not easily cleaned) is how come, after you put on a racing suit and two layers and get far from a rest room, (A) you discover your bladder really, really immediately needs to be emptied, and (B) there is a L-O-N-G course hold. (Boy, that racer 976 sure likes to hop around in the start area. He must be really nervous...)
And while we're at it, is there an actual requirement in every ski resort lease from a National Forest that they must put all the bathrooms either up or down a flight of stairs from where you're likely to be taking a break? Those stairs are typically the most dangerous pitch on the hill, bar none: Nothing like tap-dancing acrobatics down those stairs after tiredly tripping in ski boots...