Experiencing a mild traumatic brain injury may increase the risk of developing a sleep disorder, and a good portion of these appear to be based on disturbances in the body's normal circadian rhythm, according to the results of a new study."As many as 40 to 65% of patients with minor traumatic brain injury complain of insomnia,"L.Ayalon, of the University of California,San Diego, and colleagues write in the medical journal "Neurology".
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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