Going to bed late and waking up early every day can be harmful to your health. Going to bed late and getting up early every day can cause sleep deprivation, and staying up late can seriously damage your health. 1. Sleeping late and waking up early every day may cause dizziness, blurred vision, fatigue, nausea, poor appetite, poor digestion and anorexia. 2. Sleeping late and waking up early every day may cause memory loss, as well as bags and dark circles under the eyes, affecting normal study and work. 3. Sleeping late and waking up early every day may cause the body resistance to decline, inducing chronic diseases, such as hypertension, coronary heart disease, etc.; also cause autonomic dysfunction, neurasthenia and so on. In serious cases, there is a risk of inducing sudden death. Should be avoided late to bed and early to get up early to develop the habit of early to bed and early to get up early, adequate sleep can make the body rest, improve the body’s immune system, and so on.