Answer:
D) virus is the correct answer
Explanation:
After an exercise, the brain produces endorphins, a type of neurotransmitters, and the levels of stress hormone such as cortisol are reduced. Endorphins are a body’s natural painkillers and are mood elevators. Exercise also improves fitness by reducing accumulated fats in the body hence improving blood circulation in the body. Improved blood circulation enables nutrients and oxygen to reach tissues hence muscle fitness.
One is where you are lacking sleep the other is where you are taking things you don’t need like for instants you take a pain pill even when you aren’t in pain and they are prescribed