infographic says sleeping enough (some people need more hours, everyone is different) is key to longevity and good health; many studies show that losing sleep leads to loss of brain tissue too - even if it's only 1 night lost.

Scientists found that good sleep prevents hypertension ►, diabetes ►, weak immune system ► and other health problems. During sleep the body does a lot of self-repair.  

For better sleep at night, try calming meditation background music like  :)  For decades, delta brain waves music has come out and youtube has thousands of clips that combine this with the relaxing meditation music that is most pleasant for you.  This music can be used during the day and it will grant us some of the meditation benefits even if we don't meditate.  There are so many free mp3s online for delta brain waves conducive to relaxation, like or many others.  
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