I'm also a fitness fan. It's unscientific to count the time to lose weight only. Exercise needs to be systematic. It's more difficult to lose weight only, because fat is not only accumulated in your stomach, but there is too much fat in all parts of your body. Let's not talk about these things. Let me give you some advice about my experience: it is best to choose the exercise time from 3 pm to 4 pm (because this time is the easiest time for body muscles to get excited and receive), followed by 6 or 7 pm. You can eat a small amount of food before exercise, such as a small bowl of porridge or a cup of protein powder. Start exercising after 30 minutes, first do 30 minutes of moderate intensity aerobic exercise (running, cycling).