With an overhand grip, grab a pair of dumbbells or a barbell, bending at your waist and your knees. Straighten your torso and lift the weight as if performing an upright row; rather than stopping at the top, raise the weight overhead. Do this in one continuous motion by rolling your wrists back and 'throwing' the bar or dumbbells overhead. Return to the starting position by reversing this. Power snatch is performed by many powerlifters and is a great exercise for overall body mass.