Product Description Simple Exercises | Total Body Fitness Build Your Chest | Sculpt Your Back | Tone Your Abs | Strengthen Your Shoulders | Shape Your Legs | Simple Easy to use Personal Gym The Steel Bow, dumbbell of Bullworker, specializes in mobility and muscle targeting using 7-second isometric holds proven to engage more muscle fibers and build your strength up to 66% faster than lifting weights. At Bullworker, we believe people are happier and healthier with intentional movement. The world becomes a better place with exercise. For that reason, we listen, pay attention to detail and design high quality, user-friendly solutions to wellness. The result is simple and efficient fitness products fit for your lifestyle. Since 1962, Bullworker has been a leader in functional strength exercise giving you low impact and convenient product(s) resulting in stronger bodies with greater flexibility and cardio for a healthier and more active lifestyle. Low Impact Training Muscle Strength & Definition Quickly improve your strength and muscle definition in as little as minutes a day. Compound Exercises Maximize your time with efficient routines using compound exercises engaging multiple muscles at once. Mobility & Injury Prevention Improve your posture, mobility, and reduce your risk of injury with simple exercises and no setup. LASER ETCHED Laser etched in sleek space grey anodized aluminum for a lighter more durable 21st century personal home gym. FREE EMBROIDERED CANVAS CASE AND COATED RESISTANCE SPRINGS Make the world your gym. Your Bow Classic comes with a durable canvas carrying case for easy portability. Coated springs create smooth action and a variety of resistance ranges perfect for your fitness level and progression. Choose between 0-25 LBS, 0-50 LBS, 0-75 LBS, 0-100 LBS, and 0-160 LBS of resistance. Durable Rubber Removable Cable Grips Textured rubber for a secure and comfortable grip. CONTOURED HANLDES Your Bow Classic comes with high quality rubber inlayed handles for a secure and comfortable grip. What is Isometric Strength Training? The most significant breakthrough in fitness came when Dr. E.A. Muller and Dr. Th. Hettinger discovered maximum muscle growth can be attained by exerting 60% of existing muscle strength against a superior resistance for only 7 seconds once a day; a fitness technique known as isometrics. The study at the Max Planck Institute (Germany’s Prestigious Research Institute) consisted of over 200 experiments over a ten-year period. Optimum results are attained with 5 workouts per week, but impressively, even one single weekly workout is sufficient to maintain your improvements attained. Professor James A. Baley put isometrics to the test with college students at the University of Connecticut. The study resulted in the isometric group improving three times faster than the sports training group on tests measuring increases in strength, endurance, coordination, and agility. Thank you for choosing Bullworker to accomplish your fitness goals and get ready for a rapid transformation to your body!