Pay attention to the tempo at which you lift weights. Studies have shown that using a tempo that emphasizes the eccentric contraction of an exercise (such as 4 seconds down, 2 second hold, 1 second up) can increase post-exercise metabolic rate for 72 hours, compared to 15 hours for a 1/1/1 tempo. Increased metabolic rate= lower body fat. If your goal is explosive power, however, a 1/1/1 or 1/0/1 tempo is the way to go. So put some strategy behind your speed the next time you pick up that weight!