Nitro Boost Max Resist the temptation to complete your reps and sets at top speeds. If you remain cautious and focused as you perform each repetition of your exercise program, then the results will come at a faster rate. Keep in mind that you might even need to reduce the weight that you are lifting for some exercises, in order to improve results. A good rule of thumb is to use 5-10 seconds to complete each half of a given movement, taking up to 20 seconds to complete each rep.