Health & Fitness Workout Move: Knee-Push Extension October 16, 2018 annemihelich If you’re looking for a great fitness move to work your abs, here ya go. This one will definitely work your core. medium-1 Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Email a link to a friend (Opens in new window) Email Share on Pinterest (Opens in new window) Pinterest Like Loading... Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Email a link to a friend (Opens in new window) Email Share on Pinterest (Opens in new window) Pinterest Like Loading...