Strengthening your entire core is not only crucial for sculpting a flat stomach, (www . plank360 . com ) but these muscles also provide support for the entire body in everyday movements,reduce back pain, and improve posture. Plus, planks burn more calories than sit-ups or crunches because they recruit muscles in the legs, arms, and rear too. It's truly the ultimate total-body toner! You can use the plank360 exerciser while standing and work your core of the floor.