Answer:
b
Explanation:
because when you're mad,sad or bored you tend to eat more than you normally do and mostly unhealthy food
I'd advise her to not take it. The best way do gain muscle is to do heavy but short reps with long breaks and eat lots of protein.
I believe it’s carbon dioxide, because you use your respiratory system to breathe in oxygen, and oxygen goes through your circulatory system. And you breathe out CO2.
It is something people can cultivate through behavior.