Stuff like this is what gets you banned.
It doesn't take long at all, but it depends on how much gas you have and how fast you can smoke it
The correct answer is A.
Q: But how, also, why?
A:

Formula to the solution should explain everything. ^
Answer:
-Exercise regularly. Physical activity plays a key role in reducing and preventing the effects of stress. ...
-Eat a healthy diet. ...
-Reduce caffeine and sugar. ...
-Avoid alcohol, cigarettes, and drugs. ...
-Get enough sleep.