The Eternal Beach-Body Plan
Phase I - Week 1: Workout II
Exercise X: Bent-Knee Static Oblique
Sets: 2 Reps: Hold for 90 Seconds Rest: 45 Seconds
Support yourself on your right elbow and forearm and bend your knees 90 degrees and rest them on the floor. Your body should form a straight line. Hold the position for 90 seconds, and then switch sides and repeat. That's one set.