These stresses are detrimental to the health of the spine and should be avoided. They are 'always' produced by incorrect support of the spine when sleeping.

When the body is young, they are usually within the body's tolerance levels, as we get older, our tolerance levels drop and we feel morning stiffness and/or pain.

When we lie on a bed - there is no magic happening (as far as support is concerned).

Only Spinal Support Beds are “scientifically designed” to give the human body correct support with minimal distortion and its associated levels of discomfort.
See Comparative Testing which prove our beds are superior.