Answer:
Exercise physiology.
Explanation:
Is the physiology of physical exercise.
You can write letters to people, help them with homework, or just say little positive notes like "i like your shirt" or something like that. Little things make the difference.
True. Aside from warming up, it's a given fact that safety equipment for some specific physical activities are known to lower the risk of getting injured. The most notable sport that need this is skateboarding, where a helmet and some pads are being used.