Despite their initial reservations, men in Chicago are turning the other cheek and joining all-male nude yoga classes, an exercise the Associated Press calls “a form of sensualized yoga practiced nude.” Per (pronounced “Pear”) Erez, who teaches the classes in his private Rogers Park studio, limits the number of men who attend the sessions in order to “establish clarity of intention” and to provide a more “individualized approach to teaching.” Erez, 43, a well-established yoga instructor who has taught traditional “clothed” yoga for over 20 years (Oprah Winfrey is a former client), believes practicing nude yoga offers men a chance to be less concerned about “how they show up physically on their mat,” and gradually reduces “their own inner critical voice about what the male form should look like in others.”Chicagoist: What is the number one question you get asked by beginners? Per Erez: Oddly enough, it is probably not what most people would think. When I first began teaching these classes, I got much of what I called the “Big E” question from men who were concerned about bodily responses during classes.