1.75
2. Its the heart beat multiplied by the stroke volume.
3. 60 to 90 mililitires
4. Dilate
5.blood pressure
6.Wind sprints
Answer : controllable
Explanation: the second option
Answer: Circuit training builds your aerobic, or cardiovascular, endurance, too! “Your cardiorespiratory system has to work harder to keep up with the relentless demand for energy from your working muscles as you perform back-to-back exercises,” he says.
Explanation: