Popsugar Fitness Workouts 15-Minute Boxing Bag Workout From PJ Shirdan Sweat and Punch It Out With This 15-Minute Boxing Bag Workout From FightCamp's PJ Shirdan March 26, 2021 by Samantha Brodsky View On One Page Photo 9 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 9 Round 3, Exercise 1: Uppercut Stand in a staggered stance with one foot in front and your chest tall, fists up by your chin and your elbows against your ribs. Rotate at your hips, and punch one fist upward to meet the punching bag (as if you are making contact with someone's jaw), keeping your core tight. Bring your fist back to the starting position. Rotate at your hips to repeat this same punch with your other arm, pivoting on your back foot as you do. This counts as one rep; alternate for 30 seconds. Previous Next Start Slideshow WorkoutsHome WorkoutsCardio WorkoutsBodyweight WorkoutsBoxingCardio Strength WorkoutsFull-Body Workouts15-Minute Workouts