Is the Purpose of Sleep to Let Our Brains “Defragment,” Like a Hard Drive? 
We spend nearly 30% of our lives engaged in a pastime about which we are only now gaining an understanding. We know that getting enough sleep is crucial to good health, both mentally and physically. But why? Understanding the purpose and function of sleep will also give us greater insight to the world of dreams and the unconscious mind.

 Is the Purpose of Sleep to Let Our Brains “Defragment,” Like a Hard Drive? 

We spend nearly 30% of our lives engaged in a pastime about which we are only now gaining an understanding. We know that getting enough sleep is crucial to good health, both mentally and physically. But why? Understanding the purpose and function of sleep will also give us greater insight to the world of dreams and the unconscious mind.