"This might happen once in a lifetime; you don't want to blow it with just having an upset stomach because you've eaten something that's different to what your body's used to", Susie Parker-Simmons, a sports dietitian for the U.S. Olympic Committee in Colorado Springs, Colorado, said in an interview in Pyeongchang.
For Mikaela Shiffrin, it was worth the wait.
American ski racing star Mikaela Shiffrin jumped aboard that insane train when she won the women's giant slalom on Thursday.
The 25-year-old lived up the pre-Olympics hype with a scintillating performance in an absorbing three-run final culminating in a six-man shootout to add gold to the silver he won fours years ago.
Shiffrin won the slalom in 2014, a title she will try to defend on Friday. "And my coach is sitting next to me, and he was like, 'ha, ha, ha, ha, ' and he turned to me and said, 'You'd better not get fat while you're here'".
She is the gold medal favorite and you can watch the women's slalom Thursday night in prime time.
Norway's Ragnhild Mowinckel took silver, while Italy's Federica Brignone won bronze. She'll sit out Saturday's super-G to rest up for next week's downhill and alpine combined.
NBC San Diego reported the wind chill at the beginning of the course was -30 degrees. The slalom was postponed Wednesday because of similar weather, and will be run Friday.
How would the delays affect Shiffrin? A victory would have clinched a fifth slalom World Cup title, but she remains in contention for the discipline title as well as the prestigious overall crown.
Meanwhile, other Winter Olympians like Americans Chloe Kim - the youngest ever female gold medalist at the age of 17 - and snowboarding slopestyle champion Redmond "Red" Gerard, who is also 17, are the first athletes born after January 1, 2000 to win a Winter Olympics gold.
Geisenberger now has five Olympic medals, the same number as German legend Georg Hackl. The women's giant slalom was initially scheduled for Monday but moved to Thursday.
That's a big ask.
The slalom event rewards technical skiing as competitors zig-zag their way down the mountain.
No matter what, Shiffrin was going to be on the outside looking in on GS. Windy on Wednesday? She was training GS. She took a few days off, then came early to PyeongChang to practice, practice, practice. She now ties the medal record in Olympic pairs skating with three medals. But her "mental coach" is urging her to remember.
After finishing, Shiffrin put her right glove on her chest, mouth agape. As well, the snow is hard and has a feel that racers call "grippy". The 22-year-old trailed by two-tenths of a second following her first run but rallied on the bumpy course to win.
Behind the finish line, Shiffrin's father was cheering her on. Shiffrin blamed a momentary lapse on doing too many downhill races before the Pyeongchang Games.
Shiffrin was initially expected to chase as many as five medals in Pyeongchang, though her mother said Thursday she wouldn't compete in the super-G. Not here. No way, no how: "The Olympics is not about protecting the lead. It was the good way to do things", said France's Tessa Worley, the reigning world champion, who had a poor opening run and was seventh.
"You don't even know", she said.