Static stretches are part of an effective cool down because they can help increase range of motion.
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.
Bones are hard because they are made up of bone marrow and muscles are soft because they are muscles
