What's a healthy amount of sleep? It differs from one country to another

Your optimal amount of sleep may depend on where you live, new research has found. An analysis of sleep data and health outcomes for nearly 5,000 people in 20 countries revealed that the hours of sleep required for good health varies significantly across different cultures, challenging the common belief that everyone needs the same amount. The study was the first to investigate whether people from countries with shorter sleep durations suffer from worse health, and it found no evidence that this is so.

from Top Health News -- ScienceDaily https://ift.tt/PHw0zFj