Cardiovascular fitness !! anything involving the heart / heart exercises are considered cardio !! hope this helps
Answer:
D . It serves as a preparatory phase for a possible pregnancy
Explanation: the ovaries release an egg and the menstrual cycle occurs because its preparing for a pregnancy in case the egg gets fertilized.
More than 480,000 , and more than 41,000 deaths due to secondhand smoke exposure
Answer: Diabetes, high blood pressure, heart diseases, stroke.
Explanation: