Trikonasana parallel to the floor), using the extended arms as a lever, while the spine remains parallel to the ground. The arms are stretched away from one another, and the head is often turned to gaze at the left thumb, slightly intensifying the spinal twist. Returning to standing, the bend is then repeated to the left. Different schools of yoga have slightly different views about what trikonasana is and how it should be performed. A 2001 article on the asana in "Yoga Journal" with instructions given by teachers from five hatha yoga traditions (Iyengar Yoga, Ashtanga Vinyasa Yoga, Kripalu Yoga, Sivananda
Ashtanga vinyasa yoga the practice have been made since its conception. Nancy Gilgoff, an early student, describes many differences in the way she was taught ashtanga to the way it is taught now. According to her experiences, some of the differences include: Pattabhi Jois originally left out seven postures in the standing sequence, but later assigned Utthita Hasta Padangusthasana and Ardha Baddha Padmottanasana before the Intermediate Series was given; Utkatasana, Virabhadrasana A and B, Parivritta Trikonasana, and Parivritta Parsvakonasana were not in the series at this point; and Jois did not give her vinyasa between sides of the body poses or between variations