Browse evidence-based analysis of health-related claims and assertions
Adding a one-second pause at the bottom of each bench press doesn’t make your muscles more damaged or sore the next day than lifting heavy without pausing.
Mechanistic
You can lift almost a third less weight using the pause method, but still do the same total amount of work — and even do more reps and keep your muscles under tension longer.
Quantitative
Even though both methods make your triceps swell the same amount, the pause method causes more 'haze' on the ultrasound image of your triceps muscle — suggesting different internal changes.
Even though the pause method makes you do more reps and keeps your muscles under tension longer, it doesn’t make your chest or arm muscles puff up more than the normal heavy-lift method.
Both workout methods make your muscles equally sore the next day — neither one leaves you feeling more achy than the other.
Both the pause method and the heavy-lift method cause the same amount of muscle cell leakage into the blood after a workout — meaning neither one causes more muscle damage than the other.
Even though one method uses lighter weights with pauses and more reps, and the other uses heavier weights with fewer reps, both make the muscles equally tired in terms of lactic acid buildup.
Both the pause-and-lift method and the normal heavy-lift method cause the same amount of muscle puffiness right after a workout in trained guys — neither one makes the muscles look or feel more swollen than the other.
When trained guys use the 'zero point' bench press technique, their shoulder muscles swell more right after the workout than when they use the normal method — but their chest and arm muscles swell the same either way.
When trained guys lift lighter weights but pause briefly at the bottom of each bench press, they can do more reps and keep their muscles under tension longer than when lifting heavier weights without pausing — even though the total weight lifted stays the same.
When counting how much you lift, giving partial credit to exercises that work multiple muscles at once (like squats) gives the most accurate picture of your training load.
The math used in this study shows it’s almost certain that more lifting leads to more muscle and strength, and more frequent workouts lead to more strength—but not necessarily more muscle.
Most of what we know about how much to lift and how often comes from young men who already work out—so we don’t know if it works the same way for women, older people, or beginners.
Descriptive
Even if you lift the same total amount each week, spreading it across more days can still make you stronger—frequency matters on its own.
Correlational
More lifting helps, but only up to a point—after that, each extra set gives you less and less benefit, no matter if you’re trying to grow muscle or get stronger.
If you want to get stronger, doing your workouts more often helps—more than if you just want to get bigger muscles.
When counting sets that work multiple muscles at once, giving them half credit (instead of full or zero) makes predictions about muscle growth and strength more accurate.
Most of the research on how much to lift and how often was done on young men who already train—so we don’t know if the same rules apply to women, older people, or beginners.
How much you lift in total each week matters more for results than whether you do it in 2 days or 5 days—unless you’re trying to get stronger, then frequency helps a bit.
Training more often helps you get stronger, but doesn’t seem to help you get bigger muscles—so frequency matters more for strength than for size.
Muscle size and strength don’t respond the same way to more training—strength peaks faster, so adding more sets helps muscle growth longer than it helps strength.
Not all sets count the same—sets that directly target the muscle you're measuring matter more, and a method that gives partial credit to indirect sets works best for predicting results.
Spreading your workouts across more days per week can help you get stronger, but after a certain point, adding even more days doesn’t help much more.
Doing your workouts more often per week doesn’t seem to help you build more muscle, as long as the total amount of lifting stays the same.