In an ideal world, I eat a bowl of cream of rice, a few pancakes with butter and syrup, a protein shake and an apple for breakfast on the day of competition. I usually start the day big with lots of carbs, fat and protein for quick energy; the protein helps the muscles and keeps me from getting too hungry right after the warm-up. I'm also gluten-, soy-, and corn-free because all of those things make me feel lethargic.
For lunch, I try to eat brown rice, chicken and veggies (this falls during the shot put, my third event). I want good calories and I love eating between events, so I put down food as much as I can. Picky Bars, turkey jerky and dried fruit are also go-to's.
For dinner before the decathlon, I just eat anything that gets me full with awesome carbs and protein, and anything that hits the spot, is healthy, tastes good and feels good.