Know thyself

Just thought I’d make a post for those of you suffering physical pain and discomfort.
Many people are ignorant to the “scientific fact” that the left hemisphere of our brain controls motor function to the skeletal muscles on the right side of our body and vice versa. If you were to accept that movement begins with the eyes (you look in the direction you are traveling or intend to travel) then we must also consider the optic nerve and the way in which nerve impulses are sent from the brain (visual corteX) to the eye muscles.
There are in fact 2 branches of optic nerve for each eye, one attached medially (on the inside (closest to the nose)) one attached laterally (on the side of the eyeball closest to your ear), the lateral branch receives signals direct from the hemisphere behind the corresponding eye whilst the medial branch CROSSES OVER to the opposite hemisphere.
Now take an action as simple as turning your head followed by your shoulders whilst standing. Could you perform this action with just the muscles of you eyes? The tension in the ocular muscles reaches a point at which the trunk muscles come into action and your head turns in the direction you are looking.
But which muscles are engaged?
Whilst looking left for example, the left lateral rectus (ocular muscles) and it’s yolk muscle the right medial rectus would be the muscles responsible for moving the eye in it’s orbit. The nerve for our left lateral rectus is located in the left hemisphere which controls the right side of our body, and the right medial rectus receives innervation also from the left hemisphere. So we are looking left and only the right side of our body is being engaged? And yet muscles in our neck back and glutes are active in our left side. So it seems that the back is controlled by its same side hemisphere whilst a given side of the front is controlled by the opposite hemisphere.
Let us begin to use a little more of our brains then, repeat the same technique looking left, and then engage the left side gluteals and hamstrings, feels kind of awkward no, you’ll probably find that your trunk rotates back in the opposite direction due to the hip extension created with the glute max. Now try the same thing with the right side gluteals and hamstrings and you should find that with increasing tension in the gluteals you stand taller and the twist to the left intensifies higher up your trunk.
Now as another experiment, try from a standing position with a head hanging down at your chest, to engage the lateral rectus muscles of both eyes, creating tension in your back and then add in the inferior rectus muscles (the muscles which angle your eyes downwards in the orbits. Then try the same only engaging the lateral and superior (muscles which pull the eye up in its orbit) rectus muscles.
You will find the results to be the opposite when tension is held in the medial rectus muscles rather than the lateral rectus muscles.
“Temet nosce”- Know thYself.