This video demonstrates how to do a preacher curl with a dumbbell. you hold a dumbbell in your right hand so that the edge of the bench is under your armpit and your arm is fully extended over the bench surface. Raise the weight towards your chin, keeping your wrist locked at all times. Lower the weight in a slow and controlled manner. Then switch arms and do a set for the left arm.
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.