When you exercise, your body produces something called endorphins (it's sort of like morphine), and it makes your body feel less pain and make you feel more happy. In this case, the endorphins combat your stress and make you feel better mentally.
B . Push blood from the vertices to the arteries , and ventricles push blood from the veins to the atria
In order for a nurse to administer chemotherapy they need specialized training in non oncology.
hope this helps
Ergonomic .........................
I think the answer is Workplace stress