Why Flat Beds Hurt
Because your legs are curved and your spine is "S" shaped, flat beds create gaps
where your legs and spine are not supported.
It's a physiological fact that muscles in use are in a state of tension. When you
are forced to hold your head up, stretch your legs and spine, support your arms and legs,
and move your body yourself to change your position (or improvise contoured support with
pillows as you must do in a flat bed), your muscles stay in tension. That is why when you
lie on your back in a flat bed, you have to constantly move your body to stay comfortable!
Even turning onto your side doesn't help for long, because lying on your side eventually
cuts off blood circulation, hampers breathing, and gravity exerts disturbing downward pressure
on your internal organs. Thus you turn again, because the flat surface you are sleeping on
is actually causing your curved body pain and forcing your muscles to stay in tension.
When asleep, you unconsciously move into one position after another to escape this pain and
tension, but since your bed is flat and can't conform to your body's curves, you toss and turn
all night long. A good night's sleep is difficult to achieve on a flat bed!
to learn about the advantages of sleeping in an