Full of interesting and satisfying upper-body strengthening postures, create greater stability and tone in your shoulders, chest, and upper-arms. Nope, it isn't full of ridiculously inaccessible level 200 postures that only acrobats can do. It is full of things that you can actually do or at least approach within reason. The practice as always is deliberate and accessible. It's hard, but in a good way. Props Needed: Two blocks and wall space.