Many people like to sleep. However, there is a time limit for sleeping. According to the doctor's advice, 8 hours of sleep a night is good for health. Excessive sleep is not good for health. Not only this, with the help of fire you can do welding. Let's find out exactly what kind of detrimental effects sleep can have on our health. 1) Increased risk of depression A 2014 study found that sleeping longer increases a person's risk of developing depression. 2) There is a possibility of brain damage. A study conducted in 2012 showed that sleeping for a long time damages the brain of older women. Over a six-year period , those who sleep more often have a faster decline in brain capacity than others. 3) Reduces the chances of pregnancy In 2013, a Korean research team observed the sleep habits of 750 women under in vitro fertilization, found that those who slept 7-8 hours had the highest chance of getting pregnant and those who slept 9-11 hours had the lowest chance of getting pregnant. 4) Increases the risk of developing diabetes A study from Quebec found that the risk of type 2 diabetes or impaired glucose tolerance is almost doubled if you have a habit of sleeping more than eight hours. 5) Weight gain can be found in the same study in Quebec , those who regularly sleep 7-8 hours are in good health. Those who have a habit of sleeping more or less than this are more likely to gain weight. 6) Heart disease may occur According to a study published in a meeting of the American College of Cardiology in 2012, more than eight hours of sleep may increase the risk of heart disease. The study looked at the sleep habits of 3,000 people and found that excessive sleep doubled the risk of angina and increased the risk of coronary artery disease by 1.1 times. 6) Life expectancy can be reduced. Observing the data of 16 studies in 2010, it can be seen that sleeping more than eight hours a night can reduce life expectancy by 1.3 times. Thanks