At this point, you do not want someone else to tell you how important the duration and quality of sleep are. A countless number of studies have underlined the essential role sleep quality plays in our everyday life. In fact, it will not be wrong to say that quality sleep can solve the majority of mental and health issues that lots of people face every day.

Sure, you’ve heard it all before; one of the key pillars of optimal health is sleep. However, both the average quality and time spent sleeping have fallen below that of the past. Whilst a good night’s sleep can contribute to feelings of wellbeing, promote energy and boost productivity, poor sleep has been linked to heart disease, type 2 diabetes, depression, and obesity. 

Everyone has heard that an adult needs to sleep 7–9 hours a day. Specialists named a night rest of such length a “beauty sleep”. And this is not just a figurative expression. The benefit of such sleep has been scientifically proven.

The Carolina Institute specialists say that it’s enough to sleep less than 7 hours two nights in a row to start looking less attractive. Researchers asked 25 students, girls, and young men, to sleep well for two nights in a row. The fulfillment of experimental conditions and the quality of sleep were recorded with special devices. Testees were then asked to reduce the amount of their sleep to 4 hours over the next two days. The photographs of participants without makeup were taken in both cases.