A peer is someone who is the same age as you, and they do not have to even know you. You might be friends, you might not. They might be a student that's in the same grade as you.
basically, a peer is a student that is around your age.
To protect their shins from getting hit
Quadriceps, hamstrings, biceps,and triceps. is all i can think of right now.
I would feel , a little bit sad but then I’ll get over it and begin with my life