B because the heart rate starts resting, then it begins working(beating) then it reaches its maximum rate which is the fastest rate that it beats at.
Answer:
eat lots of fat rich food, it will help you to gain weight in one week.
Answer:
Cardiorespiratory endurance is measured by maximum oxygen uptake (VO2 max) and how it's used during intense exercise. Higher amounts of oxygen uptake show that you're using more oxygen and that your cardiorespiratory system is functioning efficiently.
He needs to share the last 3. Family history is important.
