DO personal trainers NEED to study neurology?
100%, unequivocally, YES!
⠀⠀⠀⠀⠀⠀⠀⠀⠀
Here's why:

Force production, movement quality / quantity, pain, tightness, coordination, emotions, posture, etc., are all orchestrated by our Central Nervous System!
⠀⠀⠀⠀⠀⠀⠀⠀⠀
All elements of the human experience are calculated.
⠀⠀⠀⠀⠀⠀⠀⠀⠀
"All that we are is brain-derived" Dr. Eric Cobb (Z-Health).
⠀⠀⠀⠀⠀⠀⠀⠀⠀
My fascination for neurology stemmed from frustration. A frustration with traditional methods that seemed to work only 30% of the time, in particular related to flexibility.
⠀⠀⠀⠀⠀⠀⠀⠀⠀
Interesting fact: 
Did you know that during "Manipulations Under Anesthesia" ALL tightness magically disappears?
⠀⠀⠀⠀⠀⠀⠀⠀⠀
Why would this happen? How come all tightness disappears under anesthesia? Simple!... Tightness & all elements of human performance are CREATED and MODULATED by our nervous systems!

It is estimated that the CNS creates new "motor solutions" to the demands of life ~100x/second! That's overwhelmingly FAST! 

The KEY question then becomes:
"WHY is this the body's BEST solution to the external and internal demands of life, at this very moment"?

When we ask ourselves the above question we edge closer and closer to the nucleus of a given client's movement dysfunction.

Ask different questions, get different answers.

No Pills.  No stretching.  No medication.  No Massage.  No Surgery.  No Adjustments.  No therapy.