The above answer is really better than mine. I don't think cycling is necessarily more expensive than running. Let's see if the heart rate is the same. If the heart rate is the same, maybe riding a bike is more expensive. But it is very important that what you need for physical exercise is continuous output. As you said, you can't stand running for a few minutes, so it's hard to last for 30 to 40 minutes. Running for a few minutes has little effect, but it's better than not moving. Anyway, if you can only run for a few minutes, you might as well ride a bike for an hour. I don't feel tired every time I ride a bike, but I feel exhausted when I get down. Running consumes a lot of physical strength in a short time. But consuming a lot of physical strength in an instant should be harmful to the general population. I'm not a fitness expert either. I just like riding a bike. I answered according to my own experience. Last year, I rode a road bike for one and a half hours every day, with a cruising speed of 32km, and lost 25kg in three months. I'm full for the other two meals except that I ate less in the evening. I once ran on the treadmill for two months, 40 to 60 minutes at a time, but I didn't lose much weight, so I felt that riding should be very expensive. It's always raining recently, so I can only ride a spinning bike at home and get up and ride. Much more tired than the treadmill. In fact, no matter whether you are trying to keep fit or lose weight, just find a sport you like. It is always difficult to persist in sports that make your body feel too tired.