From comfort to high-tech: Food a serious quest at Olympics

PYEONGCHANG, South Korea (AP) — First, U.S. snowboarding star Chloe Kim tweeted about being "down for some ice cream" while competing in Pyeongchang, then about being "hangry" because she hadn't finished her breakfast sandwich.

Clearly, food is a big deal for Olympians, and it's usually much more complicated than ice cream and sandwiches: the very specific, highly calibrated fuel they put in their bodies — for energy, for health, for warmth, for a psychological and physiological edge — is an important part of what makes them excel.