The Yoga Sutras 1.1
When I hear people say, Oh, I can’t do yoga because I a not flexible, or, I can’t do yoga because I can’t touch my toes, or I can’t sit still enough or I want to move around a lot, the student is not ready to hear that this is why we come to the practice in the first place.
The student comes to learn the physical practice, yes. More accurately, the student comes to open the mind, breath, heaters and body to open the soul to the practice.
What is asked of a student coming to practice more than anything else is:
Now, focus and determination.
I am ready to be focused and determined. This is the practice of yoga more than any degree of mobility, flexibility or pre-supposed physical prowess.