We spend a third of our lives doing it.Napoleon, Florence Nightingale and Margaret Thatcher got by on four hours a night. Thomas Edison claimed it was waste of time.
Why do we sleep?
So why do we sleep? This is a question that has baffled scientists for centuries and the answer is, no one is really sure. Some believe that sleep gives the body a chance to recuperate from the day's activities but in reality, the amount of energy saved by sleeping for even eight hours is miniscule - about 50 kCal, the same amount of energy in a piece of toast.
Prior research has shown brain differences between adult smokers and non-smokers,The new discovery indicate that a small part of a brain region called the insula is thinner in young people who smoke.
How a broken heart can really break your heart, and do you know violent games can ease your stress.
1) Think about money, work, economic outlook, family, and relationships. Feeling anxious? In a 2010 American Psychological Association survey [pdf], those five factors were the most often cited sources of stress for Americans.
2) Stress is strongly tied to cardiac disease, hypertension and inflammatory diseases, but stress can compromised immune systems, and possibly cause Cancer.