Fitness balls are a great way to make standard exercises like planks, sit-ups, and push-ups more efficient. They also allow you to do a range of other low-impact bodyweight workouts, and are ideal for “active sitting” that engages stabilizing muscles throughout your core. This GoZone red exercise ball will make a versatile addition to any home gym, and can help you keep your abs toned while you work in the office. Reach your fitness goals with well-made equipment that you can depend on. GoZone – From your first step to your next rep.