NBC Wellness, under diet and fitness provides these useful tips to protect the back and also to do your yoga stretches routine the right way. Most of the yoga classes with more people lack the one on one interaction in which a yoga instructor can provide these important tips. The first bring navel to spine, shoulders to ears for right posture. Bringing navel to spine and shoulders to ears was a prescribed method for Zen Buddhism in Japan and China since the period 1200 AD. Dogen of the Eiheiji temple in Japan in the 13th century turned this admonition into a waka poem- My nose is in line with my navel My ears are on the same plane as my shoulders and in this Japanese verse written for the Kamakura court on the meditational mood- In the heart of the night The moon framing A small boat drifting Not tossed by the waves Or swayed by the breeze This engages the abdominals and is also important as a posture for meditation. Relaxing the shoulders reduces neck and upper back tension and enables sitting in meditation for longer periods. Engaging the inner thighs is important for mountain pose and for pose of upward facing dog. This also protects the knees and is good for walking uphill and downhill. It is also done in the bridge pose for strong knees. Navel to spine, shoulders to ears, engage the inner thighs are critical three must do advice for healthy yoga and meditation. Other useful tips are to keep the hips a good distance apart in warrior pose, and in downward dog keep the hands turned slightly outwards rather than aligned all in a straight line pose. ...