What is Stress?
Stress is nothing but a feeling of emotional/mental or physical tension. It is body's response to the situation of flight or fight condition. There is positive stress (Eustress) or negative stress (distress) and prolonged negative stress leads to chronic stress.
How it occurs?
Positive stress is a response to positive situations like exams, competitions, marriage and pregnancy in women.
Negative stress is continuous tension which leads to sweating, shivering, anxiety and lack of sleep.