(1) Watch your posture. Usually walk with your head held high, your abdomen closed and your hips tight; Sitting posture should also be chest-high, not chest-pressing; Take a supine or lateral position when sleeping, and don't lie prone. (2) avoid trauma. In labor or exercise, we should pay attention to protecting the breasts to avoid impact injury or crush injury. (3) do a good job in chest fitness. Mainly to strengthen chest muscle exercise, such as doing more chest expansion exercises or push-ups, chest expansion aerobics and so on. (4) local massage. Massage breast properly in the morning and evening to promote nerve reflex and improve pituitary secretion. (5) Nutrition should be moderate. Adolescent women can't blindly go on a diet and have a partial eclipse in pursuit of curvaceous beauty. Proper intake of protein food can increase breast fat and keep breasts plump. Breast enhancement exercises for girls who help shape the chest: This group of breast enhancement exercises can strengthen the gymnastics exercise of pectoralis major function and also help improve the chest shape. You can also exercise with canned fruit juice instead of beer bottles. Keep your arms straight and support the ground with your palms. Knees on the ground, feet crossed continuously 15 times. If it is a little difficult, you can also cross your feet by tilting your hips as much as possible to achieve the same effect. Lie flat on the floor, hold a bottle of beer tightly with both hands, hold it high above your head, then spread it horizontally to your sides, then take a deep breath and lift it vertically to your head. Repeat.