I've been doing a workout consisting of chin up, dip, squat, stiff deadlift, curl, OHP, and calf raise, all for one set of 20.
Instead of just bouncing the weight up and own and cranking out the reps as fast as possible I've been doing the reps with a short pause after each one. It's about 5 seconds or 1-2 breaths. It takes about 3 mins to do each set of 20.
By slowing down and doing each rep individually it improves the mind-muscle connection and prevents you from getting too out of breath. Total workload is also higher since the rests allow you to use more weight. One set done in this fashion is probably worth 2 or 3 sets in normal continuous style.