Answer:
When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
Explanation:
Yes, exercise or any physical activity will help your mental health and stress your welcome ;)
The answer is B) red blood cells. I hope this helps!
Answer: C
Explanation: Forcing yourself is not one of the basic parts because forcing yourself to do something is putting a lot of weight on yourself.