In Pincha Mayurasana ("feathered peacock", aka forearm stand), it is common for teachers to instruct new students to place a strap around the elbows and a block between the hands in order to keep the elbows from sliding wider than shoulder-width and the hands from sliding toward each other (see image, right). However, this set-up significantly reduces the range of motion of the shoulders and necessarily forces more of a backbend into the posture, even for more advanced students. This is all fine and good provided that the student has developed enough flexibility in their thoracic spine and the ability to stabilize their lumbar spine (by contracting the pelvic floor and the transversus abdominis). However, allowing the arms to turn inward slightly, which is a very natural action from a biomechanical perspective, will decrease stress at the shoulder joints, increase range of motion at the shoulder joints, and enable the posture to be more vertical with less backbend. Check out the video below for more of an explanation, as well as a demonstration from one of the ASFYT-3 classes.