The damage of staying up late on the heart is relatively large, because after staying up late, the heart will be in a state of overload work, can not get normal rest, easily lead to increased myocardial oxygen consumption, myocardial ischemia, so in often stay up late will appear chest tightness, chest pain symptoms. Staying up late often also tends to cause disruption of the body’s biological clock and endocrine disorders, which may affect the rhythmical changes in the heartbeat, and in serious cases may lead to malignant arrhythmias, and sudden death. Staying up late for a long time also tends to lead to emotional instability, such as easy to lose temper, heart rate fluctuations are also relatively large, blood pressure increases, which will also form a bad stimulus to the heart. So usually in life, you must pay attention to try to develop good habits, to avoid the situation of staying up late.