Hi Aaron,
Your latest email on blood pressure and posture was interesting.
My posture theory includes a theory on blood pressure as well which may interest you.
High blood pressure is common among desk workers and rare in manual laborers. That is because slouching toward a desk puts pressure on the midriff and blocks blood flow from the feet to the heart.
Slouching toward a desk a hundred times a day for 10 years stretches all the veins below the chest and increases their volume and makes the walls weak so that blood goes efficiently out of the heart and down to the feet and then pools in the large veins and goes upwards inefficiently toward the heart.
When more pressure is then applied as in sudden exercise the veins stretch and there isn't sufficient blood to fill them so it temporarily fails to return to the heart and the heart reponds with violent rapid pounding in an attempt to produce a vacuum in its chambers that suck the blood up.
The net result is that desk workers tend to develop unstable or high blood pressure, and when the exercise vigorously their heart pounds violently so they avoid exertion, and they feel faint because, if the blood doesn't reach the heart, it also, temporarily, doesn't reach the brain.
The inefficiency of blood flow to the brain also contributes to tiredness. i.e. desk workers with poor posture develop unstable blood pressure, problems with exercise, and tiredness which are the symptoms of the chronic fatigue syndrome!!!
Good posture prevents and relieves the problem but I have difficulty convincing anyone of the value of the theory.
Best Regards
Your latest email on blood pressure and posture was interesting.
My posture theory includes a theory on blood pressure as well which may interest you.
High blood pressure is common among desk workers and rare in manual laborers. That is because slouching toward a desk puts pressure on the midriff and blocks blood flow from the feet to the heart.
Slouching toward a desk a hundred times a day for 10 years stretches all the veins below the chest and increases their volume and makes the walls weak so that blood goes efficiently out of the heart and down to the feet and then pools in the large veins and goes upwards inefficiently toward the heart.
When more pressure is then applied as in sudden exercise the veins stretch and there isn't sufficient blood to fill them so it temporarily fails to return to the heart and the heart reponds with violent rapid pounding in an attempt to produce a vacuum in its chambers that suck the blood up.
The net result is that desk workers tend to develop unstable or high blood pressure, and when the exercise vigorously their heart pounds violently so they avoid exertion, and they feel faint because, if the blood doesn't reach the heart, it also, temporarily, doesn't reach the brain.
The inefficiency of blood flow to the brain also contributes to tiredness. i.e. desk workers with poor posture develop unstable blood pressure, problems with exercise, and tiredness which are the symptoms of the chronic fatigue syndrome!!!
Good posture prevents and relieves the problem but I have difficulty convincing anyone of the value of the theory.
Best Regards
Max B.
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