Girls with long hair suggest tying it up. If you run with your head covered, it will be scary. I have seen girls running on the treadmill with long hair in the gym. Look at this painting from the back ... and it just looks fast, but it's not that fast. If the road runs away, it will be even more exaggerated. I don't know. I think you are catching a thief or being chased. If you like road running and fun running, you must be careful not to scare the children. If you don't believe me, you can ask your friend to record a video for you in the back and you will know what it is like.