In fact, according to a study published in PLOS One, a scientific journal, takes a stab at this question by studying the relationship between sleep duration and a number of quantifiable factors – waist circumference, blood pressure, lipids, glucose, thyroid hormones and other important measures of a person’s metabolic profile.
People in the study who slept an average of six hours each night had waist measurements about 3cm more than those getting nine hours of sleep a night. Those with less sleep also weighed more.
The relationship between more sleep and smaller waists and a lower body mass index (BMI) appeared to be almost linear. The findings appear to contradict other studies that show that too much sleep – nine hours or more – might have a similar impact on the body as too little sleep.
This new study appears to show that waist circumference and BMI are lowest for those with 12 hours of sleep. The theory of why this relationship exists has to do with two hormones that help tell you when to eat and when to stop.
Less sleep upsets the balance, making you eat more. Combine this with the slower metabolism that people with lack of sleep appear to have, and it is no wonder that they are prone to becoming larger and gaining weight.
So, if you’ve been struggling to get enough sleep at night, here are some things you might want to avoid doing in the day that could potentially upset your sleep cycle.