Long sleep is associated with a higher risk of obesity and shorter sleep with a reduced risk of high blood pressure.
In a recent study published in the scientific journal Obesity, a team of Spanish scientists delved further into studying sleep.
The results of their study shed light on the relationship between sleep duration and location.
The study found that those who took long naps - more than 30 minutes - had a 2% higher body mass index - a measure of body weight in relation to height - than those who did not nap.
They also had a 23% higher risk of obesity and a 40% higher risk of metabolic syndrome - a group of medical conditions that increase the risk of developing cardiovascular disease.
The researchers also noted that there is a link between short naps, especially if you sleep on an armchair or sofa rather than in bed, and improved blood pressure.
So: sleep less than 30 minutes and not in bed.
