The right environment would be inside the uterus and the cervix. In certain environments, such as the cervix, uterus and fallopian tubes sperm have a life-span of up to five days. That's why a woman can get pregnant if they ovulate within 5 days after intercourse.
Problems with sleep, such as insomnia, are an acute risk for suicide, whether or not they are part of a depressive episode. It is important to note that sleep problems increased the suicide risk, even after controlling for other variables such as gender, mood, and alcohol problems.
Aug. 1, 2008 -- Suffering from sleep apnea may do more than just spoil a good night's sleep. A new study shows that people with severe sleep apnea may be up to three times more likely to die prematurely, and that risk increases if the sleep disorder is left untreated. Sleep apnea is a common sleeping disorder that causes frequent pauses in breathing during sleep and is often accompanied by snoring. About 6% of adults in the U.S. suffer from moderate to severe forms of the condition, and 17% have less severe forms.