The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
- My friends are using drugs too.
-Using drugs will make me forget or not care about a major problem I am facing.
-Nothing bad will happen to me if I use illegal drugs.
Do some crunches
make sure you are eating protein after every work out
