I really want to second this. When I was a kid, I used to hate the physical training classes. It was boring, dull and the people who were good at it bullied or dominated the rest of us. This caused me dislike physical exercise in general. Much later I realized that I actually really enjoyed working out, running, hiking and other physical activities.

Thankfully, when it came to food, nutrition and sleep, my parents optimized those activities for me. It's only now I realize how important it has been for me that they did this.