Think Twice Before Pulling That All-Nighter, Study Says—Here's Why

For this study, researchers wanted to assess the relationships between brain age and sleep deprivation. They recruited 134 people with a mean age of 25 to undergo different sleep conditions, with some going through total sleep deprivation, and others only partial.

The study authors define total sleep deprivation as over 24 hours of prolonged wakefulness. The partial sleep deprivation groups, meanwhile, slept for three or five hours a night.

Following the night of sleep (or lack thereof), participants had MRIs to look at their brains, where the study authors observed that those in the total sleep deprivation group showed an increased brain age by one to two years compared to their baseline MRIs.

The same effects were not observed in the partial sleep deprivation groups, which is reassuring if you're prone to missing a few hours of sleep here and there.

Plus, those participants in the total sleep deprivation group were able to get their brains back to baseline age once they got a full night of sleep.

It comes as good news that you can effectively reverse the impact of total sleep deprivation by getting a full night's sleep ASAP. Ideally, you're not staying up all night to begin with, but extenuating circumstances can happen, so it's then important to get back on track.

Plus, even if you only missed a few hours of sleep, it can definitely impact your energy and mood, even if those changes aren't observable in the brain. In short: sleep is essential!

Ensuring you're going to bed and waking up at the same times every day is one of the easiest ways to help your body know when to get sleepy, and know when to wake up.