For those who do not rest enough from Monday to Friday, sleeping long hours on weekends is one of the greatest pleasures that exist. Yes you are One of those privileged people who can stay late in bed those days, you have no reason to feel guilty.
The psychologist Torbjörn Åkerstedt, Director of the Stress Research Institute of the University of Stockholm, he spent 13 years researching the benefits of a good rest on weekends.
These scientists published their conclusions last May in the report 'Sleep duration and mortality – Does weekend sleep matter?' ('Duration of sleep and mortality – Does sleeping the weekend matter?') And the results are more than surprising: Rest more the findes can lengthen your life.
Åkerstedt and his team studied the sleep habits of 43,880 people in Sweden, which they followed up for thirteen years. They found that those who spent five hours or less a day in Morpheus' arms, including weekends, had a higher mortality rate 52% higher than those who slept between 6 and 7 hours.
However, in their research they also concluded that people who slept little Monday through Friday and rested for nine hours or more on weekends had a similar mortality rate to those who rested at least seven hours a day.
It should be noted that this Swedish psychologist focused his research on those under 65 years of age. The differences in the mortality rate disappeared from this age, since it is usually sleep the same from Monday to Friday and on weekends.
A study published in the American Journal of Physiology-Endocrinology and Metabolism (2013) concluded that sleeping more Saturday and Sunday improve the mood. In this study, researchers from the University of Pennsylvania showed that recovering those days lost sleep hours reduced the levels in the blood of the hormones that are generated with stress.
Another investigation, carried out in 2016 by the University of Chicago, showed that sleeping well for two nights in a row counteracted the increase in the risk of diabetes associated with lack of sleep.
This study also concluded that sleep restriction in the short term, with four or five hours of sleep per night, can increase the risk of developing diabetes by 16% compared to the increased risk caused by obesity.
The other side of the coin
But not everything was going to be good news. A research published in the Journal of Clinical Endocrinology & Metabolism this year assures that 85% of people who sleep late on weekends, also go to bed late those days. In these cases it is when there is a greater metabolic risk.
And is that going to bed later in the weekend is related to a decrease in HDL cholesterol (the good cholesterol), high triglycerides, a higher body mass index and an increase in insulin resistance.