There is ample medical evidence that orgasms are good for you. For a woman, having regular orgasms can boost the immune system, improve digestion, regulate menstruation, relieve pain, discourage breast cancer cells from developing into tumours, and even make her look a decade younger. For a man, the benefits are similar: regular orgasms can reduce levels of stress, improve memory function, reduce depression, improve sleep, and lower the risk of heart attack and prostate cancer. A man who has three or more orgasms a week (as opposed to the national average of 1.5) can add three years to his life. If he has the will and the stamina, having an orgasm a day will add yet a fourth year.