It is difficult to eat before running 1.5 hours, especially indigestible food, otherwise it will increase the burden on the stomach and easily cause vomiting. In the long run, it is easy to gastroptosis and cause digestive tract diseases such as cholecystitis; Add some sports drinks, but not too much, otherwise the stomach will be uncomfortable; Do some warm-up exercises, especially lower limb muscles and joints, to prevent injury; The exercise load is arranged to run at the heart rate of 130 beats/min, and gradually increase to 150 beats/min after one or two kilometers. If the speed is very fast at first, it is easy to strain; If it is cold and it is not easy to take off your clothes, you should reduce your clothes step by step, or you will catch a cold. Wear sports equipment, loose sportswear and suitable running shoes when running. Don't wear those hard-soled shoes and high heels, it will hurt your feet.