Do more aerobic exercise. Maybe it's because you're thin and have been sitting for a long time, and your shoulders are a little high and low. Aerobics can correct your body shape, and if you are thin, you can enrich your body by exercising less and eating more meals. For example, people who have some abdominal muscles will stand better, while those who lack exercise will walk more decadent first.

The landlord can go online to search for some dumbbell exercises and so on.