Answer:
the ribs protect the heart. The rib cage protects the heart, as well as the lungs. The rib cage and the sternum helps to protect the heart and its surrounding organs from damage . The heart is protected by several different bones. The breastbone or sternum protect the heart.
Explanation:
It depends on your age and gender but an average number would be to 20-35.
B)20
Physical fitness is when you run and you do excercise that works on your body .
Drink lots and lots of water and stay hydrated because dehydration is a big risk.
