Losing weight is an activity that consumes a small amount of calories. It is better to lose one pound a week and has little impact on health.
The way is to open your legs and keep your mouth shut. Do aerobic exercise for about an hour every day, such as: jogging, swimming, cycling, playing badminton, tennis, square dancing, Tai Chi, etc.
Keep your mouth shut, that is, control your caloric intake. You can set up a food calorie table and compare it to control your daily caloric intake to be less than your caloric consumption.