Answer:
It improves strength and muscle tone, to protect your joints from injury. It keeps you maintaining flexibility and balance, which can help you remain independent as you age. It also helps with weight management and increased muscle-to-fat-ratio. Aa you gain muscle, your body burns more kilojoules when at rest.
Explanation:
I majored in Health
The part of your brain that controls your heart and lungs is the medulla.
In my opinion, i think it's D but im not sure. Hope this helped, have an amazing day :)