Do some warm-up exercises before running. Jogging for 10 minutes and thigh exercise for 5 minutes are good choices. You can also perform some dynamic stretching, such as alternating arms, lunges and squats. Do not stop immediately after running. It is best to walk for 10 to 20 minutes while breathing deeply to give your body time to cushion. It can be combined with some static stretching exercises, such as lunge press, side press, etc.