Proof: sleep revs brainpower
We often think of sleep as an “off switch” for the brain, but a study from Johns Hopkins Medicine shows the brain doesn’t rest, it resets. In an animal study, levels of proteins that recalibrate, or reset, connections between brain cells were 250 percent higher when mice were asleep. As a result, mice that got enough sleep did 3 times better on a memory task. The authors say brain cells crucial for learning and memory can only store so much before they need a reset, and that getting enough sleep ensures memories are properly stored.