Sleep deprivation impacts performance even if you don't feel it

Sleeping in on the weekend may be one of the healthiest things you can

Sleeping in saves lives

"The mortality rate among participants with short sleep during weekdays, but long sleep during weekends, did not differ from the rate of the reference group", a section of the research read.

Sleep expert Michael Grandner explains it this way: Most people who are considered "short sleepers" are probably just shy of getting seven hours.

For people under the age of 65, getting five hours of sleep or less nightly during the week was connected with a 50 percent higher likelihood of death compared to getting the recommended seven hours of sleep. The performance of sleep-deprived individuals was no different among those who reported feeling alert and those who said they felt exhausted.

Torbjörn Åkerstedt, a clinical neuroscience professor at Sweden's Karolinska Institute and one of the authors of the paper, said the findings are similar with previous research into sleep duration and the connection to mortality. What is your average amount of sleep per week? The results show that among people sleeping 5 hours a day, there is a 65% higher mortality rate. People who slept too much, regularly conking out for eight hours or longer a night, also had a worse mortality rate. The take home point is that possibly, long weekend sleep may compensate for short weekday sleep.

"What happens is, if you are well-rested, your sleep drive will be low in the morning, and it builds and builds over the day, when at night you need to go to bed to relieve that pressure for sleep". "People can not learn to live on insufficient sleep and they may not be aware of their reduced cognitive abilities".

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