Perform sets of Dips and Chin-ups back to back for twenty minutes. Rest between supersets as necessary (e.g. set of dips, set of chins, rest, repeat).
Options for performing dips include parallel bars, positioning the hands on the backs of two chairs, or using the corner of a countertop.
Intermediate and Basic trainees should substitute chair dips, push-ups, or knee push-ups as necessary.