While paying attention to fitness time, exercise intensity is also a key to affect sleep. The general view is that evening exercise does not advocate intensive exercise, but there are different views. For example, a recent study found that doing moderate-intensity exercise 1 hour 90 minutes or 60 minutes before going to bed will not make it difficult for people to fall asleep, nor will it reduce the quality of sleep. Many other studies have similar findings. A researcher who specializes in observing this problem at the University of South Carolina in the United States believes that exercise before going to bed can actually promote sleep, reduce anxiety and raise body temperature. Japanese scholars believe that exercise before going to bed can promote the quality of sleep. His experiment confirmed that the quality of human sleep is closely related to rectal temperature. The faster the rectal temperature drops, the easier it is for people to fall into deep sleep. Studies have found that doing some light exercise such as jogging before going to bed can promote the temperature rise. Stop when you sweat slightly after jogging. At this time, the body temperature began to drop. When sleeping after 30-40 minutes, people will easily fall into deep sleep, thus improving the quality of sleep. However, researchers also know that there are individual differences in reality, that is, not everyone can benefit from bedtime exercise. Therefore, exercise before going to bed will not affect sleep and cannot be generalized. It depends on everyone's specific situation. If you keep the habit of doing exercise before going to bed for a long time and it won't affect your sleep, there is no need to change it. Because everyone has everyone's work and rest habits, there is no need to imitate the so-called "healthy" habits. But if you are preparing to form a fitness habit, it is strongly recommended that you avoid strenuous exercise before going to bed.