If you are interested in strength training then this is something you will have to learn. If you are more interested in gaining muscle then not so much but I would still advise learning how to do it just to save your lower back. When lifting heavy weights it's vital to use your core strength.
Doing it one rep at a time may be standard for Squats but for deadlifts and bench press I'll go 3 reps at a time if I'm serious about gaining strength. The main reason is you can stay tight and stay in the groove. . Breathing actually interrupts the groove. Sets of 3 are gold for strength training. Any more then yes you need to reset and take a breath and get tight again and well you will just learn this as you go.
Try doing some triples with just one breath and watch your strength explode.
Does this help grow muscle though? I would say no. It will tax your CNS to the max and you will be stronger but that's about all. It works because you use more motor units for the same lift. Good in theory but if I want my pectorals to grow I don't really need to be driving through the legs.