Start in a lunge with the right hand on the floor, walk your hand under the leg. Shift your weight onto the right hand and allow the front foot to come off of the floor. Grab onto the foot, bend the knee and carefully place the foot behind the head. Raise your arm up into the air. Press the head back against the leg. Use a wall against your back for more support.
This pose opens lower back, the outer hamstrings and the hip. This pose strengthens the triceps, the deltoid, and rhomboids
Forearm, Wrist and Rotator Cuff: Do the seated variation of this pose instead where the arm is not bearing weight or stay in the first few stages.
Neck or Outer Knee: Do not put the foot behind the head.