Attack Fitness Run Attack Curved Treadmill (With Resistance)The Run Attack Curved Treadmill (With Resistance) is engineered to mimic the natural biomechanics of outdoor running. Its distinctive concave shape facilitates a running experience that closely mirrors the body's natural movement patterns. Powered entirely by your own effort, this treadmill operates without electricity, providing a more sustainable and immersive workout. The curved, slatted running surface is designed to be activated by the balls of