Doing all your sets for one exercise before switching to the next might build a tiny bit more muscle than mixing exercises up, but it's such a small difference we can't be sure it's real.

Doing a simple exercise right before a harder one with no break doesn't make you stronger or build more muscle better than just doing regular workouts, according to current research.

Two different ways of lifting weights—pre-exhaustion and traditional—both help you get stronger and last longer during exercise about the same amount.

If you do the same total amount of exercise, three different workout styles—regular weight training, pre-exhaustion, and drop sets—all work just as well for building muscle strength, endurance, and size.

Doing single-muscle exercises first makes you tired, so you can build muscle with lighter weights on bigger exercises.

Doing isolation exercises before compound lifts (like leg extensions before squats) doesn’t make you stronger or change your body more than doing the lifts in a different order, as long as you’re already trained.