Sending a courier is bound to lose weight. Doing express delivery is hard work. To be a courier, you must first have a good body, and you can do anything when you are in good health. Secondly, you must have good psychological endurance. Some customers are very mean, it is hard to look down on the courier, and the courier will be wronged. Third, there is no time to eat. You can't eat after delivering the courier. If you have been a courier for a long time, you can't consider losing weight.