I think so, too. Improving physical fitness is nothing more than taking enough nutrition. Plenty of exercise. Mental health. Have a proper rest, 1 have proper nutrition. There is no need to buy any supplements. Eat an egg every day. It is best to eat in the morning. Boiled eggs. Eat egg yolk protein. Chew slowly and absorb nutrients. Breakfast is very important. After washing in the morning. Take three sips of warm water. Can flush the gastrointestinal tract. Promote metabolism. After that, it is best to have a toilet in the morning. Remove dirt. Your daughter should have breakfast on time. Have a good meal. About a glass of milk. An egg. Two or three steamed buns are enough. Lunch and dinner are mainly vegetables. The staple food (rice. Pasta, etc. ) Meat is also an essential vegetable. Staple food. The meat ratio is about 2: 3: 1. It doesn't matter much. But you can't eat too much meat for dinner. Have an early dinner. It is best not to exceed 19. Can cause indigestion. Nutrition intake is similar. That's all I know. I'm sorry. Hehe 2 About sports. Get up early in the morning. Stretch your muscles first. Stretch the ligament. Then exercise 15 to 30 minutes. Jogging. Gymnastics is very effective. Skipping rope is also good, preferably in fresh air. It's nice to have sunshine. It can supplement calcium. If your daughter is a student. Gymnastics in school had better be done seriously. When I was a student. Do those gymnastics seriously. I feel much better. Used to be puffy. It's normal now. You should stretch your muscles before going to bed. Physical education class's relaxation exercises are already very suitable. Time 5 to 10 minutes (optional. )。 Relax before going to bed. Take your time. Otherwise it will affect the quality of sleep. If you exercise. You can see this situation. Increase or decrease. Mental health is difficult. It depends largely on your daughter herself. You can find a chance to tell her some philosophical stories. A light and humorous joke. Watch TV with her. Study with her. Time can be a medium. After dinner. You should show your positive side to your daughter. Let her study. Discover the joy of life. Then love life. If you have a rest. 8 to 10 hours a day is enough. It depends on age. If you are 13 years old, it is better to spend more than eight hours in nine hours. It is best not to exceed. Talk too much. Will cause a decrease in nerve sensitivity. The brain develops slowly. Too little is worse. It is best to go to bed after 9 pm and before 10: 30 pm. Sleeping at night is the best way to detoxify and maintain. Sleep quality is very important. So don't watch TV 10 minutes before going to bed. 3C products such as computers. You can listen to light music like a lullaby. Don't listen to pop music and rock. Don't turn on the light when you sleep. Otherwise, it will affect the secretion of melatonin. It is best to sleep on the right side. Body facing to the right. It is best to get up in the morning and tell yourself that today is a beautiful day. A new day. This is a very effective psychological effect. This will enable your daughter to spend the day effectively. These are my life experiences in the past twenty years, and they are also the experiences of others. I hope it helps you and your daughter. If possible. Your daughter had better look at this answer, too. This will be highly feasible. In short, it is to get enough nutrition. Take more exercise. Mental health. Take a proper rest. Plus the word persistence. I wish you and your daughter success!