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.
Consuming too much caffeine in one day can exacerbate or induce psychiatric conditions such as panic attacks, psychosis and mania. And lay off the caffeine benders -- long bouts of caffeine-induced insomnia have even led to acute suicidal thoughts or death in some cases.