Not everyone can sit on their knees. Teachers that make "basic" yoga tapes need to offer up other ways to get the job done. If you cannot do this, do this, etc. There are several poses on this tape that cannot be done unless you are flexible even if you use a blanket, block or belt. This is why you are buying the tape to increase flexibility. Nothing is mentioned about what to do if you cannot do the pose even with the block, belt, etc. I have been taking yoga for six months and have received some good class instruction to fall back on but without it, I would have found this tape frustrating. The teacher has a lovely voice and clearly she has beautiful form but how is this going to help me?