Describe how caffeine can affect your stress level. how does it affect your cardiorespiratory system? include information about the hormone called adrenalin

Caffeine is a stimulant. This can cause your nervous system to become hyper-aware; which in turn can cause an increase in your stress level. Caffeine causes a rise in both respiration and cardiac function. The hormone adrenaline is secreted by the adrenal glands in response to stimulation of the sympathetic nervous system. It causes what is known as the "fight-or-flight" response.

Well, l think that some effective communication is, emotional barriers and lack of attention, interest distraction or irrelevance. also some physical disabilities such as hearing problems or speech difficulties.      l hope i am correct  and you good luck.