With a grown-up, put together a small first aid kit for your backpack or the family car, using supplies you already have at home when you can, like bandages, gauze, and a cold pack. Label what each item is for and practice saying out loud when you would use it. Athletic trainers bring a bag like this to practices and games, so you are packing like one.

Invent a five-minute warm-up for your family or friends before you play outside, with moves like arm circles, leg swings, and gentle jogging in place. Draw each move on an index card, then lead the group through the cards in order. Athletic trainers use warm-ups like this to get bodies ready before the game starts.

With a grown-up, go to a free or low-cost youth, high school, or college game and look for the athletic trainer on the sideline. Not every team has one, so you may need to ask which games will. Notice what the athletic trainer carries, where they stand, and when they walk onto the field. Afterward, draw the sideline and mark where the athletic trainer spent most of the game.