It is not good to run on an empty stomach in the morning. After a night of metabolism, many organs need to replenish energy, and running on an empty stomach is not good for all organs. Specially stimulate gastrointestinal tract, accelerate gastrointestinal peristalsis and increase gastrointestinal burden. It is even worse for cardiovascular and cerebrovascular diseases, especially for the elderly, which is easy to cause cardiovascular and cerebrovascular diseases such as insufficient blood supply, malignant arrhythmia, acute myocardial infarction and cerebrovascular accidents, and even sudden death. It is also prone to hypoglycemia, especially in patients with diabetes and impaired glucose tolerance.

It is most beneficial to physical and mental health to supplement food properly before running in the morning and replenish water for the human body after running in the morning. And don't be greedy for perfection in fitness exercise. Excessive exercise will also affect the spirit of the day.