We get tired after exercise because our muscle fibers get tired very quickly. This is due to the major source of energy for the muscle tissue, called adenosine triphosphate, or ATP. As the muscles make use of this supply of energy, they get tired and fatigue.
Answer:
I think its the blood oxygen levels
Explanation:
Answer:
1. It is not as bad as it seems, and it is better than it seems. (Then explain why)
2. I understand your situation, and I am willing to help you.
3. There might be a miscommunication, because deep down, I know that you don't believe what you are saying.
4. Just take a moment to breath and relax.
5. It may seem bad, but eventually you will be able to overcome and surpass this.
Explanation: You want to go with cam and soothing words and tone, especially when handling with this topic. You choice of diction is crucial.