Hi Sunshine, this is a bit difficult! Its a jump through in Ashtanga practice begins in downward dog. You keep your hands planted on the ground and your legs pass under your body and through your arms to arrive directly in a seated position, sometimes with your legs outstretched and sometimes crossed, depending on where you are in the sequence. In the Ashtanga primary series, this transition is repeated many times as it is how you are supposed to arrive in each seated posture, making the flow more seamless and smooth. The basic technique is to bend your knees and cross your ankles while passing between your arms before re-extending your legs on the other side. It may not sound too complicated until you try it and realize your feet are in the way, or as some claim, your arms are too short to complete the movement.