Stress is a situation where life's demands on a person exceed that person's ability to cope up with the situation. Every human being has the ability to recognize stress and the innate intelligence to respond with. Often a person under stress is wired to have either 'fight' or 'flight' response. Stress is an outside stimulus which, most often, adversely affects our physical and psychological temperament. That is, stress affects a person both physically and psychologically. Stress may be positive or negative. Some stress is good and may have a positive effect. This positive stress is called eustress. However there is a limit to such stress. When a stress begins to affect a person adversely, it is called a negative stress or distress. Positive stress acts as performance motivator and under its pressure a person often performs beyond the threshold limit of his or her capabilities. Negative stress always results in physical and psychological sufferings. Psychological symptoms of stress include worry, anxiety, depression, hypertension, irritability, insomnia and lack of appetite. Some of the physical conditions under stress are allergies, asthma, heart attack, high blood pressure, overactive thyroid gland, peptic ulcers, gaining weight, lethargy, and swollen eye bags.