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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.