after careful consideration(approx 26 seconds), i see huge benefit in this. it is congruent with many methodologies i am aware of. it is congruent with the bible. david picked his best fighting men by observing them drinking from a stream. the ones who kept their heads upright and cupped the water in their hands up to their mouths were his choice instead of those who exposed themselves to ambush by placing their heads down to the stream to drink from it. jacob used a rock to incline his head when he dreamed of the famous ladder with angels going up and down it. and the bible says god created man upright. i have a good friend who sleeps in a recliner and it has kept him alive when his health has been poor.
thanks for this tip. it is not worthy of note, it is worthy of practice.