Sleep is a state of consciousness which is essential for good health. It is a period of rest and recuperation for the body and much needed ‘down time’ for the brain. It refreshes the mind and repairs the body. People vary in the amount of sleep they need, depending on their age, lifestyle, diet, and environment. Generally, we sleep less as we age and our sleep tends to be more broken. Newborn babies tend to sleep for around 16 hours out of every 24, while adults average eight hours and the elderly sleep a little less.