This doesn't mean, however, that the smoke from them is harmless. Nitrogen dioxide and carbon monoxide are also by-products. Cigarettes and cigars release similar pollutants. It's okay to burn a candle or some incense occasionally if you really enjoy it, but keep in mind that incense and candles do pollute indoor air. Always keep the room well ventilated.
Black cohosh is still one of the best-selling herbs for menopausal symptoms.
Thus far, the evidence is still pretty thin. Mohammed Ali and many other athletes have claimed that they abstained from sex before a big event, sometimes for weeks. Joe Namath and others have said that sex the night before was good for their game. There has been only a little real research into this issue, all of it involving men. It suggests that sexual activity per se doesn't affect physical performance for better or worse.