The area on a man from just above his bet line to collar bone. The man zone is the area where maximum strength is necessary to complete a lift such as the "power clean".
A second definition of the man-zone. A general phrase that symbolizes testicular fortitude and can be applied to most areas of a man's life.
David could complete his workout because he could not enter the man -zone.
David couldnt close the deal with that hot chick because he wasnt in the Man-Zone.