Experiment 1

Sit on a chair and put your hands on both thighs, gently squeezing the quadriceps or thigh muscles. Get up slowly and notice the tightness or tension in these muscles as you go up. Just as you acquire the vertical position and release the control over these muscles, they will become instantaneously flaccid. One might expect these muscles to be taut so as to support the body in the vertical position but that does not happen.

Experiment 2

Put both thumbs on either side of the lumbar spine on the low back muscles pressing into them. Then walk slowly and feel how one side or the other contracts as you lift one leg and put the other on the floor while walking. Stand still and march on the spot doing the same thing. An amazing phenomenon will be noticed. The side on which the leg is raised is more tight or taut than the other which bears the weight of the body. This is an irony, as putting all your weight on one side, as opposed to both sides, should tighten the lumbar muscle concerned. This does not happen and in fact the muscles are quite normal in their tension. There is hardly any noticeable increase in tension of spinal muscles on the side on which you stand.

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Pain Relief-Muscle Relaxers