Answer:
Your pineal gland. Its responsible for producing melatonin, a hormone that helps regulate sleep and wakefulness.
My best guess would be D. many studies have linked cardiorespiratory exercise to the lowering of blood pressure. (Many studies have also linked going vegan to the lowering of blood pressure, too :)
we need a better understanding of this question
Answer:
not sure but circulatory
Explanation:
cause your emotions change your heart rate
I think because they want to be with people their age that can relate to tgem
