Similes and Metaphors: Keep it on the Body

Kimberly King Parsons related that a teacher advised her [during her MFA studies at Columbia University?] to “Keep it on the body.” In other words, Parsons was advised to connect every metaphor or simile to the human body. Parsons asked:

Why compare something rust-colored to a brick when you could compare it to a spleen? Why put a plane in the sky when you could put a floater on the back of somebody’s eyeball?

Parsons opined that “Keep[ing] it on the body [...] builds bodies and worlds simultaneously." 

You may not want to use this technique exclusively, but peppering your writing with metaphors and similes that are inspired by the human body could add some muscle to your writing, but you might have to reexamine your bio.