the role of sleep

People need sleep because it is a necessary condition to maintain normal levels of cognitive functions such as speech, memory, creative thinking and flexibility.

This is an important highlight that the world's leading expert on sleep, Dr. Dang Vu Thien Thanh shared with PV. He has studied for many years in this field at the University of

American scientists only sleep 7 hours a night to protect men from prostate cancer risk.

Recent research by American scientists shows that sleep helps people eliminate harmful toxins in the brain after a stressful working day.