Be careful when running, your calves will get fat. If you grow muscles, it will be very difficult to lose weight. If the school organizes a morning run or something, when you land, your feet should be as light as possible, and the vibration of your calves will be smaller.
Girls' waists are generally thinner.
Also, I tell you, stand up, sleep in bed and do hip lifts 50 times a day.
In class, I try not to sit in all the chairs with backs. As the TV said, I am tired of one third of the chairs, so I sit in half. Girls with straight shoulders and hunchbacks will lose two points.
Never cross your legs, your legs will bend.
Well, that's all I know. I will try my best to help you. I hope so.