What kind of influence do peers have over each other?

Peers can have a positive or a negative influence over each other. It is mostly called "peer pressure".

Hope this helps!! <3

Peers can have a good influence or a bad influence. If your friend is a good friend, they will be a good influence on you. I hope I could help! :)

for question 8

1: it gets the blood pumping more

2: endorphins and other neurotransmitters