Aches and pains are clear signs that it may not be. Your brain and spinal cord connect all of your nerves throughout your body and allow it to function properly. Stresses in everyday life can produce incorrect posture which cause muscles to contract, spinal joints to go out of alignment thus causing nerve conductivity to be reduced. When the nervous system cannot supply the proper message to your body, your body cannot function properly... setting up a viscous cycle of ill health and disease.