Sempre x Marlin:
http://en.wikipedia.org/wiki/Sexual_abstinence
Abstinence from sexual activity often results in an obvious build-up of hormones, correlated with a feeling of well-being. Testosterone and estrogen, two primary sex hormones that build up during abstinence, are related to other antidepressant neurochemistry such as serotonin and endorphins. While orgasm releases endorphins in short-term secretion, abstaining for more lengthy periods of time produces a more lasting feeling of what sometimes may be described as euphoria, and, according to many partners, better marital sex. Abstinence has been by some as a natural antidepressant.
Raymond W. Bernard, Ph.D. in his essay entitled Science discovers the physiological value of continence (1957) states:
t is clear that there is an important internal physiological relation between the secretions of the sex glands and the central nervous system, that the loss of these secretions, voluntarily or involuntarily, exercises a detrimental effect on the nutrition and vitality of the nerves and brain, while, on the other hand, the conservation of these secretions has a vitalizing effect on the nervous system, a regenerating effect on the endocrine glands and a rejuvenating effect on the organism as a whole.
http://www.ktk.ru/~cm/contin.htm
Riguardo al sesto rito: in Occidente è stato trasformato con il nome di Stomach vacuum, serve a combattere il ventre prominente e a far risaltare la tartaruga addominale (cioè i muscoli addominali)
Per l'esecuzione:
http://www.bodybuilding.com/fun/ms-fit5.htm