One of my new gadgets is the bodyblade....This thing gives you a heck of a work out especially if you do it freestyle, grat cardio standing still....https://www.bodyblade.com/
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Health, Fitness, Non-Apparatus Exercise, Unarmed Self-Defense, Firearms Self Defense
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It definitely works neglected muscles, the small muscles and fibers missed by other things, as an asthmatic I love the standing still cardio it gives...even though I'm moving my arms so to speak, its vibrating my whole body...depending how hard I go my legs can feel like I went on an elliptical. So I get great benefits by doing an iso/zass strap routine and now incorporating the bodyblade.