So how much sleep is considered “too much”? The answer is more than nine hours a day. Results from a recent study have shown that people who regularly sleep too much might suffer from diseases such as neurasthenia, easy to get angry, depressed, pessimistic about life and about the people around. Additionally, more than 50% of those who sleep too much are usually attacked by dangerous diseases such
as stroke, heart disease, or increase risk of diabetes than those who only sleep about 6 to 8 hours at night. Many people sleep too much during the daytime. It can be considered a sleep disorder, which makes it very difficult to completely feel healthy. Who sleeps too much can become lazy, weak, fatigue, stress, and can not focus on work and study. Also, excessive sleep can lead to some dangerous diseases: