"I call this core workout my “all-angles ab workout” because it targets all angles of your core—back, sides, and front," writes Laura. "This routine only takes 15-20 minutes, depending on how many sets and repetitions you do. I recommend starting with 2 sets of 10 reps and progressing your way to 3 sets of 15 reps. Adding reps will keep the workout challenging as your body adapts to the movements. Be sure to work slowly through the movements and avoid using momentum, as this will increase the effectivity of the exercises."