The answer is B, psychology.
Genetics, Pollution, Family history.
So that you're muscles wake and warm up to be ready for what ever your work out is so they won't torn something
The "ins" and "outs" of school-age social relationships can be accommodated by having a Democratic<span> style of organization for your school-age program.</span>
Explanation:
when you are addicted to something you tend to crave for that thing until you get it. But too much addiction is not good.
Example
If you see someone who smoke everyday one day you would wake up to hear that the person has died due to its effects on the body organs.
