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、半莲花坐、莲花坐，甚至躺卧。站立虽然也可以，不过因为您需要把一些体力和精神分担在站姿上所以效果一定不够坐或躺好。