Take planking to another level with this variation abdominal workout. Engage your inner core, outer core, obliques all the while listening to a familiar party tune. Rather than targeting a a singular muscle group, this workout exercises and challenges your entire mid-section, which will get you that flat tummy in no time.
Call up your workout buddy or fly solo. This workout might sound silly, but the intensity is no joke. All you need is a yoga mat (carpeted floor will do).