Bill Gates must not sleep much when operating Microsoft.Even when he was over 40 years old, he still had to compete with his counterparts to see who to rest less.For them, sleep is wasting time.However, Bill Gates changed his mind when he saw his father suffering from Alzheimer's disease."When I learned about this disease, I realized that one of the most accurate prediction factors about any memory loss, including Ahzheimer's disease, is less sleep," he saidknow.

According to a 2021 study of Harvard Medical School, people aged 65 and older, sleeping less than 5 hours a night at risk of dementia twice as high as those who sleep from 6-8 hours per night.

Bill Gates in a healthy life program (Photo: FB Bill Gates)

Sleep is also important for young people, sleeping from 8 to 10 hours per night can help young people develop intellect, mental health and optimal memory, US Sleep Medical Academy for the United StatesKnow in a 2016 statement.

According to the Center for Disease Control and Prevention, for people from 20 to 64 years old, sleeping from 7 to 9 hours a night will help achieve the best physical and mental health.

"When you are young, you often think sleep is not important, it is wrong. Sleep is a way to help the body recover," Bill Gates advised."The best thing you can do to have a clear spirit, healthy brain is getting enough sleep," he added.