Did you ever wonder what's going on with your muscles when you are executing triangle pose? First, there are several muscles involved with triangle pose. The synergistic muscles to the quadriceps are the iliosoas and tensor fascia lata. The antagonist are the hamstrings, gastrocnemius, sartorius and gracilis. The chakra that illuminate is the second - naval. When you move into extended triangle (Utthita Trikonasana), the rectus femoris flexes the hip, the quadriceps contract, extending the knee and flexing the hip. So the next time you move into triangle pose be sure to thank all those muscles that are guiding you there!
~Mary Jane - www.fengshuiyoganj.com