Ever just lie down flat on the floor?

So good.

from the anckles or from the back of the knees?

I just widen my stance and let my upper body hang down like I'm trying to touch the ground directly between my feet.

If I feel there's still a bit left, I'll grab my ankles or the ends of my pant legs and pull.

It's so good, like a "the best things in life are free" moment. (over 40 here btw)