<human>:  Why do they train soldiers to run so much?
<bot>: Running is a very good way to build endurance. It’s also a good way to build up leg muscles. When you run, your heart rate goes up, and this helps you to burn fat. It also helps you to get in shape and lose weight. Running is also a good way to build up your lung capacity. This helps you to breathe better when you’re fighting or shooting your gun.