Skipping rope on an empty stomach is not good. Don't drink too much water before skipping rope. If you don't feel uncomfortable, it is generally recommended to exercise one hour after meals. The best time of the day is afternoon or after meals. According to my own personal experience, the exercise effect is good one hour after dinner in the evening, usually after 7 pm. It takes at least 15 minutes to lose weight, and then jump continuously. I usually jump 2000 times, about 20 minutes. If I can persist, it will really work. Stop one day a week without jumping, and lose almost 5 kilograms a month.