19-year-old boys are a little short in height, 170 kg, which can be said to be obese, and their figure should be chubby. My suggestion is that 19 years old is a developmental period, and it is not too late to change the status quo. As long as you pay attention to your diet and do more exercise, you can not only increase your height, but also lose weight. How tall you are and how thin you can be depends on the perseverance and hard work of boys.