Sleeping properly is one of the best things you can do for your health. How come? First of all, our brain consists of more than 1 liter/quart of blood. During our sleep, and only between 23-24 pm, the blood leaves the back of the brain to be purified in the liver. If we are physically or mentally active during this time, our body miss out on this. The liver doesn’t get enough blood to function properly and the blood sits in the back of the head and will not be cleansed, as it