Billy White, MSc3 minHow to Do the Hammer Curl (Step-by-Step)The hammer curl is a common and effective exercise for the upper and lower arm muscles. See this exercise guide.
Billy White, MSc4 minFat Gripz | The Best Forearm & Grip Strength Technique? [Explained]Fat gripz. They're the piece of rubber that wraps around a barbell (such as an ez-bar) making the barbell thicker, improving grip strength.