In Tibb (Islamic Medicine), sleep is classified as moistening.
In a recent study by Kings College London it was found that, ““Sleeping for longer each night is a simple lifestyle intervention that could help reduce intake of sugary foods and lead to a generally healthier diet”
“The fact that extending sleep led to a reduction in intake of free sugars, by which we mean the sugars that are added to foods by manufacturers or in cooking at home as well as sugars in honey, syrups and fruit juice, suggests that a simple change in lifestyle may really help people to consume healthier diets.”
Source
EurekAlert!, the online, global news service operated by AAAS, the science society.