According to recent scientific researches, when some parts of our body is strongly stimulated, eg being beaten to a certain extend, our body will secrete a special kind of hormone, with a structure similar to morphine . This will counteract the pain and the damage by that stimulus. If there is oversecretion , it will cause sense of happiness and pleasure. I supposed SM people have more secretions or over active response to these hormones (named endomorph )作者: 影风 時間: 2004-4-4 10:20 PM