Jogging belongs to aerobic exercise. After aerobic exercise for more than 30mins, you will start to consume fat, but you need to control your diet while exercising. For example, when you run, you consume X calories, but you eat Y calories. When x >; You can lose fat. In addition, long muscles need some weight-bearing training and protein's supplement. People who have just started exercising can gain muscle and lose fat at the same time, because muscle and fat are completely different substances. So, you may not lose weight after running, but your body fat has decreased.