Om Gam Ganapataye Namah.
At 44 seconds into this video something happens. The sadhu stands up and if you listen with your heart, you can hear the silence of his prayerful and meditative mind.
Sure, the video starts out with his legs a little wobbly. And, sure, the modern western methods of combining strength training, or the South Indian methods of strength training, make him look slightly frail by comparison to our juggernauts of physical strength and yogic prowess.
But how can we know what his frail legs have stood upon? What mountain passes and snow clad heights his bare feet have trod? His meager diet and exposure would fell the mightiest of us, I would admit.
Take a look again at the way he stands. It's not a "full expression" of the pose... or is it? Yes - his head is slightly bend down, showing perhaps some lack of "flexibility" or "openness" in the hips. But note the demeanor in his face, and the humility of that slightly down-turned bow. Namaste....
