I'm curious, since you can touch the ground with your fingertips if you bend over with stretched legs.
Can you also lay down on your back, flat on the floor with your whole body, but, with your legs bent, in such a way that your calves touch your upper legs? According to some, people who can do this, can't do the touching of the floor with their hands the way you can.
Maybe I am misunderstanding, but that sounds so easy an old fat man can do it.
Maybe you should should describe the challenge more fully.
... or not. WTF do I care. I have done daily stretches since nineteen seventy two. I have not missed many days, either. For an old fat man, I am more flexible and powerful than I generally appear, at least, until you get to know me and how I react to things.
So, tell us how this particular impossibility works, please.
I can tell you if I can not do it today, I certainly can in three days time or maybe after one good stretch.
... but I am being centristical-ishly punk-like.
I will set my ego aside for long enough for Odeon to respond. Perhaps he will understand the challenge.