Today’s workout with model Karlie Kloss uses a combination of stomach-toning planks, twists, and stability exercises designed by trainer and modelFIT guru Justin Gelband to zero in on the upper and lower abs and obliques.
Good 4 minute workout here. Scroll down past this pic to the demo of high knees, squat jumps, burpee/ mountain climber combo (ouch!) and a ab move. Perfect before I start the day with the kids Easy at home workout