University of Michigan psychologist Kimberdie Fenn investigated how coffee affects performance and whether this drink can help with sleep deprivation, in particular, to maintain attention.

Writes about it Sciencealert.com.

The researchers noted that studies examining the effects of sleep on more complex types of thinking have shown somewhat mixed results.

"So my team and I decided to determine how staying awake one night affects different types of thinking. We asked participants to complete various cognitive tasks in the evening and then randomly assigned them to either go home and sleep or stay up all night in a lab. The participants, who were allowed to sleep, returned in the morning, and all again completed cognitive tasks", – stated in the message.

How caffeine will help after a sleepless night

Scientists noted that due to lack of sleep, a person becomes inattentive. Therefore, scientists decided to establish, and what can help solve this problem.

One survey in 2022 found that more than 90% of American adults surveyed consume caffeine in some form every day. Scientists wanted to know if caffeine would help maintain attention and avoid mistakes when storing things after lack of sleep.

"Interestingly, we found that caffeine improved concentration so much in sleepless participants that their performance was similar to people who slept through the night. Giving caffeine to people who slept through the night also increased their productivity. So, caffeine helped everyone maintain attention, not just those who were awake. This result was not unexpected, as other studies had similar conclusions", – stated in the message.

A few hours of sleep does not help to recover

However, scientists note that the best thing is a full sleep, because only he can restore the body. Therefore, they decided to test whether a few hours of sleep would help the body.

"We gave some participants the opportunity to take a nap for 30 or 60 minutes during night deprivation between 4 and 6 a.m. This period of time approximately coincides with the lowest point of vigilance in the circadian cycle. Importantly, we found that participants who dozed off were no better at a simple attention task or a more difficult ordering task than those who stayed up all night. Thus, sleeping in the middle of the night had no noticeable benefits for cognitive performance in the morning after a night of general lack of sleep," the report said.

While caffeine may help you stay awake and feel more alert, it likely won't help with tasks that require complex thinking. And while a short nap can improve your well-being at night when you need to stay awake, it likely won't affect your productivity.

"In short, enough sleep is necessary for your mind and brain, and there is simply no substitute for sleep."

Recall what will happen if you give up coffee for a month and forever.

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