C.your perception of stress
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!
I believe it is A I’m not 100% tho
The 650 skeletal muscles in the human body contract when they receive signals from motor neurons, which are triggered from a part of the cell called the sarcoplasmic reticulum. Motor neurons tell your muscles to contract and the better you become at having those signals tell your muscles to contract, the stronger you can get.
Answer:
Developed nations make up about 75% percent of the world’s population and consume about 20% percent of its resources
Explanation:
Hope this helped! Have a great day!
