Waking Up at Night Could Be Your Brain Boosting Your Memory

We tend to think a good night’s sleep should be uninterrupted, but surprising new research from the University of Copenhagen suggests just the opposite: Brief awakenings may be a sign you’ve slipped well. The study, done on mice, found that the stress transmitter noradrenaline wakes up the brain many times a night. These “microarousals” were … Read more