Not only does swinging your arms at a faster rate help you walk faster—and ignite serious calorie burn—but that movement also engages the upper body, lower body, and, of course, your abs. "The ...

Walking is often seen as just a simple cardio exercise, but it can secretly help you develop abs overtime as well, if you do it right. The trick lies in how you move your body while walking. This may ...

Nevertheless, Amazon's SlenderBelt is a customer-led contender, with one reviewer leaving a detailed comment: " So easy to ...