A barrier would be a person has an injury and can’t work out or a person lacks knowledge of how to work out correctly. Hope this helped! :)
The cool down will restore muscles to their resting length.
There are many. (im going to try to be specific as possbile) You need a good resume. Witch means good handwriting. You need to be smart in that subject. witch might require college. and college is Quite expensive. If your overweight. they may not hire you even if you are experienced. Because people are very judgemental. (Hope this helped!)
Answer:
A system is a group of individual parts that work together to form a unified whole. ... The final product or service provided by a system. Feedback loop. A process of monitoring outputs to determine whether or not the system is working.