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.
Thyroid Disease and Sleep Apnea. There is also a relationship between an increased incidence of sleep apnea (brief periods when you stop breathing while sleeping) and hypothyroidism. Frequent apnea can also cause unrelieved exhaustion. Apnea is often also seen in conjunction with snoring.