Staying up late can lead to lung infections and other related diseases due to decreased immunity. Staying up late for a long period of time can damage the immune system, leading to a decrease in immunity, which can easily lead to lung infections and other related diseases when exposed to cold and other conditions. Repeated lung infections may also have an impact on the lungs when they occur repeatedly, especially if the patient has underlying lung diseases such as chronic obstructive pulmonary disease, bronchiectasis, etc. Repeated infections can accelerate the progression of the disease. In addition, although staying up late does not have a direct impact on lung function, it can lead to a decline in physical fitness and activity tolerance, which can also have a negative impact on the body. Therefore, it is recommended to have a regular routine in daily life, ensure sufficient sleep and avoid staying up all night.