@mattwalterfit: 15-Minute Ab Workout you can do ANYWHERE No fancy equipment needed, just your body and 15 minutes of your time. Routine: Plank - 1 min Side Plank (Left) - 1 min Side Plank (Right) - 1 min Leg Raises - 15 reps Oblique Twists - 30 twists (15 each side) Crunches - 30 reps Rest for 2 min then REPEAT Total of 3 Rounds #workout #workoutplan #absworkout #abs #gym #gymmotivation #weightlosstips #gymlifestyle #workoutroutine #workoutvideo #abworkout