A new collaborative research has shown that the stem cells in the brain decrease ischemic injury and restore brain function.The research carried out by researchers at the Mario Negri Institute in Milan,Italy, the Istituto Neurologico Besta,and the University of Laussanne has been published online in PloS ONE.Ischemia is an absolute or relative shortage of the blood supply to an organ.Relative shortage means the mismatch of blood supply (oxygen delivery) and blood request for adequate oxygenation of tissue.Stroke is the first cause of permanent invalidity and the third cause of death in industrialised countries.
A man usually needs about two or three minutes of stimulation to have an orgasm,a woman generally needs 10 times more. For a man,an orgasm is instinctive.For a woman,it happens only after direct stimulation of the clitoris. A man's climax usually lasts for 10-13 seconds.For a woman,it lasts 6-60 seconds. A man must recuperate after an orgasm but a woman can have repeated orgasms within minutes or in rapid succession. Wonder why a man rolls over and sleeps after? During sex,his body releases oxytocin,a hormone that induces drowsiness.A woman is more relaxed after sex,which is why she wants to talk or cuddle.
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