That's perfect. Jumping too much is not good, and the joints can't stand it. You'd better jump on the soft ground when you jump. Last time I jumped on the concrete floor in the corridor, my spine, head and neck were twisted. Fast jump and rough jump can be based on your own situation, but fast jump is reduced faster, because it consumes more energy, so you should feel it when you jump. I don't think it's necessary to go on a diet, but we should pay attention to our diet, eat until we are eight points full, drink plenty of water and don't eat greasy sweets, that's all. Anyway, you insist. One of my classmates skipped rope for ten minutes every day and lost 20 pounds in half a year. But it's harder to stick to it. Pull down the muscles after skipping rope, otherwise the muscles will be uneven and ugly. Then, come on!