Answer:
If something happens to one friend you have another one that can help you. The more people you're with, the safrer you are.
Explanation:
Environmental Science
Hope this helps!
One of the major things it helps with is decreasing stress and getting oxygen flowing through your body
1. Revise
2. Be calm
3. Be hydrated
4. Be positive (your going to pass this exam, I believe in you)
and 5 Good Luck mate.
Answer
Cortisol
Explanation:
Cortisol or stress hormone is a steroid hormone produced in the adrenal gland( Cortex) .A spike in the levels of this hormone suppresses Serotonin levels in the blood. Serotonin is a neuro- transmitter in the brain for mood regulation and balance of memory., good sleep sexual function.
A spike in the levels in the cortisol level in the blood brings a corresponding decrease in the levels of Serotonin,which therefore leads to mood swings depression and insomnia,anxiety by reducing the receptors for serotonin,and therefore disrupting Endorphins levels in the brain.
Exercises decreases the levels of cortisol in the blood,and boost the levels of serotonin therefore boosting the amount of serotonin in the blood ,thus promoting good mood, reduce depression etc
