The Rules:
Similar to the hands and feet, these are areas that are perfectly fine to leave hairy. You do, after all, still want to resemble a man. However, if you are in a swimming competition or can think of some other reason you need to be completely smooth and aerodynamic, groom the hair with a body trimmer, then shave the areas. For rough areas like knees and elbows, Barshop recommends exfoliating first with soap and a nylon scrubby thing to loosen the hair.
The Tool:
Dove Men+Care Deep Clean Body and Face Bar, $4, Target