Visually, the squat pattern is simple. However, neuromuscularly and biomechanically it's actually very complex. It requires a number of precisely executed components to lock the movement in. Some of these include:

• Set the hips back without bending over.
• Spread the knees apart but not excessively.
• Keep a neutral spine while maintaining a very slight natural curvature of the back.
• Squat somewhere between 90 degrees and parallel (don't collapse or go ATG).
• Pull yourself into the bottom position rather than allowing gravity to push you down.
• Brace the core and tense your abs.
• Keep the chest out without hyperextending the back.
• Screw the feet into the floor by pushing slightly more to the outside of the feet.
• Keep the feet relatively straight and aligned with the each other.
• Pull the bar into your back by activating your lats.
• Keep the head neutral (don't look up but don't let the head drop).
• Maintain maximal full body tension each and every rep.
• Move in a perfectly vertical fashion without shifting horizontally.
• Load each leg as symmetrically as possible without favoring one side.

And this list doesn't cover everything. So how the heck do you actually learn to squat without going through an exhaustive myriad of endless cues?

Answer: Eccentric Isometrics

Now I'm not talking about simply collapsing down into the bottom of a squat, then pausing for a few seconds while you hang out on your tendons and ligaments. That's a bastardized version of an eccentric isometric squat, and it won't do anything to improve your squat mechanics... not to mention strength or muscular development.

Instead, squat with painstaking attention to sensory signals and proprioceptive feedback using Jedi-like focus and intensity. Lower slowly under control, stay tight, then pause in the naturally stretched position while attending to as much somatosensory feedback as possible.

Why Does It Work?

Your own body can provide all of the necessary feedback, coaching, and cuing you need. You simply have to learn how to listen to the sensory feedback coming from your proprioceptive mechanisms and you'll immediately begin to use the "sense of feel" to make subtle adjustments and fine-tune your movement. The best way to do this is through properly executed eccentric isometrics.

This also means learning to sense where the natural stopping point and optimal range of motion is, which happens to be somewhere between 90 degrees and parallel.

And just in case you were wondering, no, your body is not an exception to the rule. A proper squat including optimal range of motion and ideal joint angles will look almost identical from human to human if it's performed correctly, regardless of individual anthropometrics.