Some one had the same question as you so here is someone answer.
Answer: You can monitor your exercise intensity by using any of the three main test methods: measuring your heart rate, doing the talk test, or checking your rating of perceived exertion
Explanation:
Answer:
B. Using different exercises, one after another for set periods of time.
Explanation:
I majored in Health
D. A warm up
If you don't warm up, you end up putting your self at risk, by stressing a muscle to far or something along those lines.
Hope this helps!
