Achieve alignment by engaging the tensor fascia lata on the bent leg. To activate this muscle straighten the elbow and then gently press the outside of the knee against the arm, as shown. This abducts the thigh at the hip joint. Because the arm keeps the knee from moving backwards, the abduction component of the TFL has the biomechanical effect of drawing the pelvis forward. This helps to open the front of the body in the asana!
The upper trapezius (traps) knot up very regularly and cause you to feel tight, hunched over and can often cause stress and tension headaches. All you need as a firm self massage/trigger point ball and do the following exercise for a great myofascial release.