Proprioception, also often referred to as the sixth sense, was developed by the nervous system as a means to keep track of and control the different parts of the body. An example that enables one to best understand this sensory system is one showing what happens if this sensory system is no longer there.
The few coaching cues involved in the goblet squat more than suffice to get the job done: 1  Hold a weight against the chest. 2  Position your feet so your stance is a smidge outside shoulder-width, with your toes pointed slightly out. 3  Drop it like it's hot.  Go down as low as you can while keeping your feet flat on the floor.
Solutions. 1  Each rep of most sets of squats should descend to where your quads are parallel to the floor or platform, if not deeper. 2  Any form of leg press should descend at least until your quads are parallel to the foot platform.  Squats or leg presses should briefly lock out, or stop just short of lockout, at the top.