Facial Expressions - How Attractive Are You?

Yesterday I was in the gym finishing up the final workout of a
month long volume-loading progression.

It was a long workout, and I saw a lot of people come and go in thegym, all with different facial expressions.

You can divide them into three categories.  Neutral (most
people's), attractive (very, very few), and completely unattractive
(a "vocal" minority).