In this technique, you break each set into smaller sets, with short rests in between. It can be used for any body part, and different combinations allow you to use more weight, more volume and more time under tension. Our example here is Leg Press. Instead of the usual 3 sets of 15-20 reps, our trainer does two reps, then a short pause, less than 20 seconds. Three reps, pause. Five reps, pause. Then 10 reps. The result is more reps and therefore more weight lifted within the set.
Try different combinations that work for you.