Some books tell you so, but sticking to it for 5 or 6 minutes won't have much effect. I'm afraid this action will take at least 60 minutes to burn calories. Is it time-consuming? I have a friend who also likes to do some exercise before going to bed. She has been pedaling in the short 100 times, and it took only about one song to sweat. She persisted for a week and said it was very useful, so she let it go happily.