The disadvantage is that there is no fixed time and it is not easy to stick to it. Think about it and practice it. If you can't remember, or you are too tired and in a bad mood that day, you may not want to practice. The way to overcome this drawback is to download a PDF-format yoga tutorial e-book on the Internet, make a yoga plan, and practice only one or two movements a week. After a long time, connect the movements you have learned before and practice them once a day. Yoga at home, no money, no running, how to practice as you want, very free.