Any straight back position works: sitting on a chair, on your knees, in \"half-lotus\", or \"lotus\", as well as lying down. Standing is also ok, but it decreases the training effectiveness, as you will spend more energy for maintaining a straight posture.
任何直背坐姿都可以：坐在椅子上、膝上、半蓮花坐、蓮花坐，甚至躺臥。站立雖然也可以，不過因為您需要把一些體力和精神分擔在站姿上所以效果一定不夠坐或躺好。