Deep sleep: 4 things to know

1 / Deep sleep regenerates energy in the brain.
Although it may seem hard to believe, when you are asleep your brain is actually in an active state. Brain waves continue, slow down and increase depending on where you are in your sleep cycle. When awake, brain waves move in a similar fashion during REM sleep.

In a 2010 study of sleep and energy levels, scientists observed a surge of energy during these slow oscillations. This means that deep sleep repairs the body and stores energy for the next day's tasks. You can thank him tomorrow for all the energy you will have in the morning!

2 / Memories are created during deep sleep.
You've probably heard that sleep turns everyday facts into memories overnight. But how exactly does this process work? It is the work of deep sleep. A 2016 study on sleep and memory showed slow oscillations indicate communication between the hippocampus (which stores your recently acquired memories) and the cortex (where long-term memory is stored). We can thank him for the declarative memory in particular. It matches memories that can be described verbally, like a hilarious family vacation or the storyline of your favorite TV series, rather than skill-based memories like riding a bike or changing a tire.

3 / It cleanses your brain.
It turns out that deep sleep is also like a self-cleaning oven. Sounds strange, doesn't it? But during this phase of sleep, cerebrospinal fluid (CSF) removes toxins and wastes collected during the day out of the body, and keeps the brain clear and healthy. This same process of flushing the brain targets and also removes a toxic protein called beta-amyloid. This protein is known to accumulate in the brains of Alzheimer's patients. Keeping your brain clean is one more thing on the list of benefits of deep sleep.

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