According to the researchers, this means that people who were impaired from chronic sleep restriction were unaware of any impairment.
Researchers say you shouldn't feel guilty about catching up on your Z's.
What we should all really take away from this is one important fact: if you're short on sleep, get more however you can.
Lead by Torbjörn Åkerstedt, professor at the Stress Research Institute at Stockholm University, the research team analysed information on health and sleeping habits gathered from 43,880 participants over the course of 13 years.
But when the short sleepers slept in on the weekends, their mortality rate did not differ from that of the consistent seven-hour-a-night sleepers.More news: Nipah kills one more in Kerala, toll touches 14
If you are having trouble sleeping, then this other study suggests that you go camping for a weekend in order to reset your body's natural sleep cycle; or you can simply put on Baa Baa Land, the "world's most boring film".
And could even help you live longer.
Many people complain they do not get enough sleep, and it seems they are right to be concerned. Not in the new study. They might sleep six hours or slightly less. In the same age group, short sleep (or long sleep) on both weekdays and weekend showed increased mortality. Whether that's going to bed at 8 on a Friday night, sleeping in till 11 on a Saturday morning, or snoozing in the subway on your way to meet friends, do it. Grab that sleep by the horns and don't let go - you may just live longer for it.
We often hear about how the most successful people wake up early and get a jump start on their day before the sun is up.
He thinks a lot of people may relate to sleeping less during the week and, at the very least, may want to have an excuse for sleeping in on their days off. To the authors' credit, he said, they were aware they did not have a fine brush, and accordingly painted a broad outline of sleep habits.