Inversion can increase the blood circulation of the head and improve the oxygen supply to the brain, and proper inversion exercise is beneficial to health, and the best time for its exercise is 3-5 pm. Usually there is no time constraint for inversion, you can arrange it according to your own time, but try to avoid this kind of strenuous exercise one hour after meals to avoid stomach discomfort. But if you want better results, it is recommended to do it in the afternoon 3-5 pm, when the best physical fitness, can reduce the chances of muscle strains and other injuries. Inversion time is usually 5-15 minutes each time is appropriate, the longest not more than 30 minutes, the need for gradual practice, not intensity too fierce, so as not to cause injury. In fact, for the average person, the difference between the time of inversion exercises on physical strength is minimal, no special consideration is needed to choose the timing should be based on their own time and diet arrangements. But if you have cervical spine pathology is not recommended to do this exercise.