You can eat bananas. After exercise, you can eat some carbohydrates+protein, such as skim milk/yogurt, a small banana, white bread and boiled egg white. You can eat whatever you want after stretching and taking a shower, but don't be too full. Just don't feel hungry before going to bed. Whether you are fat or not depends on the overall intake. If you exercise too late at night, don't eat too much and sleep without feeling full or hungry, so as not to affect your sleep.