Answer:
This is called stress.
Explanation:
Stress is a set of reactions the body has in response to various stimulus. It generally presents itself as nervousness, fear or even fatigue and it is a mental, emotional and physiological response. They body reacts this way because it is assessing what to make of the situation, whether it be new, threatening, frightening or exciting.
Once it has decided what to make of the situation or how to react to it, the stress and nervousness may go away gradually or escalate, it mostly depends.
