Simon-Auguste Tissot, a famous 18th century physician, claimed that semen is a precious bodily fluid and that losing it through excessive sex or masturbation caused loss of strength and memory, blurred vision, nervous disorders, gout, rheumatism, blood in the urine, headaches, and loss of appetite. Even today, many people view sex as dirty and unseemly. Fortunately, the times they are a-changin'.

Four European sex experts (a hormone specialist, a psychologist, a gynecologist and a urologist) concluded that more sex equals better health. Sex is fun and provides significant psychological and medical benefits. Frequent sex improves sex hormone regulation in men and women, and boosts blood vessel health. Frequent ejaculation reduces the risk of prostate enlargement and cancer. As in the world of sport, the secret of good sex is practice, practice, practice! (Journal Sexual Medicine, 6: 2640-2648, 2009)