It is best to reduce body fat through exercise. If you exercise a certain part of the body alone, the effect may not be good.
I suggest you do aerobic exercise five days a week, that is, exercise with slight sweating but no asthma, such as jogging, brisk walking, swimming, aerobic exercise and cycling. Of course, you can also go to the gym to exercise. Daily exercise 1 hour, 1-3 months will have obvious changes, and it will be consolidated in 6- 12 months.
In addition, we should control our diet, pay attention to proper energy intake, and eat little or nothing at night. In short, "keep your mouth shut and open your legs, and your body will become more and more perfect."
The above is my experience, I hope it will help you.