THE ARENA on Instagram: "Learn this essential boxing drill that will transform your defense and punch mechanics! In this boxing training tutorial, The Arena’s Boxing Coach Joe Vargas @joe_hits demonstrates a simple but highly effective technique using a rolled-up glove (or towel/ball) placed under the fighter’s rear armpit. By squeezing the object tight against the body, fighters develop muscle memory to keep their rear hand protecting the face at all times - one of the most fundamental boxing t