A book on Sleep and Sleep Tracking Apps
Why We Sleep Sleep is something that we do almost every day and yet explore it only superficially. We either say “I should go to sleep” or “I wish I had slept longer”. Recently I read “Why We Sleep”. It’s an interesting book because it explores the topic in such depth. I learned that birds sleep on power lines and the birds on the right and the left of the group are sleeping with one eye open.