. >> reporter: olympians need fu. i love food. >> i need to eat at least 4 to 5 times a day. >> reporter: a couple months under my mother's roof eating her home cooking. >> lots of fuel. >> i'm from texas. so a nice steak is always great. >> reporter: swimmer elizabeth beisel is a 3 time olympian. from days of cheering for beijing, london and rio. how do you eat in those cities. >> it is hard. >> reporter: the array of produce this this store ranges from exotic to expensive. >> this is the best avocado i've seen. >> reporter: there's a myth about swimmers that you can eat anything you want. >> when i was 15, yes. now no. >> reporter: at 2 beisel eats smart. >> i would go crazy with she and many olympians can't resist. >> i love chocolate milk. >> chocolate milk. >> reporter: from this kitchen her team prepares 1200 meals a day for team usa. >> not only does it taste good. it's all the nutrition information that they know to look for to get in one 12 ounce container. >> reporter: but they are human after all. from the a