Why Do We Sleep? Science May Have Finally Unlocked the Answer

Did you know that our brains never stop working? Not even when we’re sleeping. Instead, its job just changes in the hours when it’s not operating on a conscious level. Even when we’re dreaming, there’s a lot happening in the background. When we don’t get enough sleep the whole system of our being gets affected and we stop functioning normally.

But what is the real reason that we need lots of sleep? It all has to do with the brain’s waste management system. Here’s what that means.

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Scientists Always Wondered

woman sleeping under blankets

Ivan Oboleninov / Pexels

Ivan Oboleninov / Pexels

​Scientists and people, in general, have wondered why we sleep for a long as we can remember. Some felt as though it was a waste of time that was interrupting our hours of productivity. Then, we started to noticed how all species, from birds to bugs, also needed to sleep, so we figured there must be an explanation behind it.

Two centuries ago, the Scottish physician Robert Macnish theorized that the purpose of sleep was to “renovate the mind” by offering it a period of deep rest. This got scientists curious about the biological processes that happened in our brains while we dozed off. Over time, they finally unlocked the answer.