Popsugar Fitness Workouts Plank and Lunge Workout Work Your Entire Body With This Intense 14-Minute Plank and Lunge Workout June 24, 2018 by Jenny Sugar View On One Page Photo 1 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Plank Jacks Begin in plank position with your feet together. Keep your upper body stable and engage your abs. Begin doing jumping jacks with your legs. Hop them wide, then hop them together. Jump as quickly as you want. Do plank jacks for 20 seconds, then take a 10-second rest. Previous Next Start Slideshow WorkoutsStrength TrainingBodyweight ExercisesBodyweight WorkoutsButt ExercisesPlankIntermediate Workouts15-Minute WorkoutsArm ExercisesLeg Exercises