Step A: Lie on your back with your knees bent, feet flat on the ground and arms at your sides. Take a deep breath and pull your belly button in. Step B: As you exhale, slowly tip your pelvis up so that your upper body forms a straight line from your knees to your shoulders, as shown. Hold for two beats; take another deep breath, then exhale and slowly roll back down.
Pin for Later: The 10 Most Effective 30-Minute Workout Videos, All in 1 Place Shred It at Home: 30-Minute Bodyweight Workout Workout: NYC-based celebrity trainer Adam Rosante leads you through his kickass bodyweight bootcamp workout. What you'll need: Space to move