My Story Page 17

Physiology of Fatigue

Posting to third eye bloglet - My Story Page 17 - Physiology of Fatigue : 12th November, 2006.

The datewise archives of third eye bloglet - My Story : My Date with My Body - about eyes, mind, sex, science, and society turned into web pages. My Story Page 17 makes a real interesting reading:

What is the physiology of fatigue?

The muscle gives a signal that it is finding it difficult to keep doing what it is doing.

But to whom?

Who gets the signal?

The nervous system!

Does the manifestation of fatigue depend on the physiological state of the muscle as such, or the nervous perception of it?

What is the signal that the muscle is sending?

Is it pain?

Is fatigue a muscular pain?

Or is it a defense mechanism of the nervous system?

Some researchers argue that fatigue is a defense mechanism regulating energy expenditure.

According to this theory, when people feel tired they stop working and avoid further stress whether physical or emotional!

Thus their energy gets restored before it gets depleted fully.

The physiology of fatigue is supposed to be the muscular or mental inability to perform the desired and/or the necessary physical or mental activity.

It happens so when the body has exhausted its metabolic reserves and accumulated a lot of waste products in it.

The muscle is no longer able to contract effectively.

Rest, somehow, tends to reverse this situation.

But then, there are some persons who are always fatigued whatever they do, or even when they don't do anything!

Although such physiology of fatigue is a pathogenic condition, but it's so common among almost all the human beings throughout the earth that makes us doubt if we were born like this only - a diseased species?

My temporomandibular joint was fatigued almost permanently when my eyes saw clear, and I wouldn't let it go like that!

I was determined!

I remembered three extraordinary incidents that had happened to me, or say, with me in my life at different times, and that I had never been able to forget.

They were rather miracles than incidents alone, rendering the entire physiology of fatigue redundant!

I needed an explanation for them now.

Let me start with narrating the first....

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