List several nutrition principles that are important for athletes across disciplines.

There are some nutritional principles that athletes has to follow, they include the following: 
1. Eating of balance diets
2. Eating quality foods, especially unprocessed foods.
3. Consumption of adequate carbohydrates; athletes should not go low on carbohydrates.
4. Adequate fluid intake.
5. Avoidance of alcohol consumption.

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.