Drink milk (boxed), eat more fruits (bagged), and eat more cucumbers and tomatoes. Take a nap in the afternoon. Before 7 o'clock and after 6 o'clock every day, walk around the school playground and insist on doing morning exercises every morning. Don't stay up too late at night. Go to sleep within half an hour after turning off the lights. The school food is not good, and there is no oil and water. Going outside on weekends has a toothache.