Pay attention to the tempo at which you lift and release your weights; meaning the amount of time it takes you for the concentric move(muscle shorting), the pause and the eccentric move(muscle lengthening). The few seconds for each portion can mean a lot in terms of results by helping you break past plateaus and boredom. Next time you lift, try a ratio of 3/1/2 or 5/2/1, or make up your own. Have fun and have a great workout!!