Slider V Pulse The Slider V Pulse is designed to target your core and waistline. Begin seated on the ground with knees bent, feet together, and a slider placed in between your toes. Place your hands on the ground behind you, elbows bent, and lean your upper body back to about 45 degrees. Lift your feet about six inches off the ground. Pulse your knees in toward the right side of your chest, then toward the left. Perform three sets of 12 reps per side. Image Source: Tone It Up