Competetive sprinting: in competetive running you have to be prepared because the people you verse in competetive running will be fast and ready so you have to be ready and you have to try your absolute hardest to get to the end first.
Competetive cross country: in competetive cross country you can't just relax you have to push yourself because when you have other people in your race who want to win then you have to try and keep up with them. So this means there can be people who have a faster pace then you so that means you have to push yourself.
Arms: when sprinting you put your arms at a 90 degree angel and you point your fingers. You have to do the opposite arm, one arm pointed up one arm pointed down then you run with doing that with your arms