There must be relaxation in full extension.
Yoga aims for complete awareness in everything you do.
To master fear is the most important battle to win.
As long as the body is not in perfect health, you think about it, and that prevents you from thinking of the mind. The sound mind is a sound body.
It is not yoga that injures, but the way one does yoga that leads to injury.
Asanas maintain the strength and health of the body, without which little progress can be made. Asanas keep the body in harmony with nature