The benefits of morning running on an empty stomach vary from person to person, and for normal people with weight loss needs, morning running on an empty stomach can play a role in reducing fat and improving lung capacity and endurance. However, fasting morning run is not suitable for everyone, there will be increased gastrointestinal burden, low blood sugar, induced cardiovascular disease and other health risks. Early morning morning running on an empty stomach, due to the lack of timely intake of carbohydrates, running can regulate the body fat involved in metabolism and provide energy support, thus having a certain weight loss, improve lung capacity and endurance, for the normal population with weight loss needs are some benefits. However, running in the morning on an empty stomach is not suitable for all people, and it is not recommended to participate in running in the morning on an empty stomach for people in the following situations. 1. people with poor gastrointestinal function: morning fasting movement will make the gallbladder secretion of bile, but no food digestion in the abdomen, in the long run will increase the risk of gallstones, but also can be accompanied by nausea, usually gastrointestinal function of the crowd does not recommend fasting morning run. 2. Hypoglycemia: fasting morning run will make the original existence of hypoglycemia or diabetic people, the body’s blood glucose level is abnormal and induced hypoglycemia reaction, easy to appear weakness or even fainting symptoms. 3. cardiovascular disease people: fasting morning run will accelerate the heart rate and raise blood pressure levels, will produce an excessive burden on the heart, may appear arrhythmia, induced heart disease dangerous situation. It is recommended that in daily life, you can drink water and eat food such as milk and eggs properly before running in the morning to avoid adverse effects on the body.