The 3-Minute Abs Workout Kayla Itsines Swears By

RELATED: Here’s Why Kayla Itsines’ Workouts Are Taking Over the World

Start your sesh with a series of 10 bent leg situps, then transition to 15 straight leg raises. (Feelin’ the burn in your tailbone instead of your abs? Put some padding under your tush to cushion your booty as you rock back and forth—that’s what Kayla does.)

Finish your circuit with 20 ab bikes per side—and then repeat that routine for three full minutes. Your core will feel more chiseled in no time. (Score more slimming moves with Women’s Health’s Flat Belly Yoga DVD.)