If you're a guy who lifts weights and doing bench presses, the flat bench works your chest muscles the most — especially the middle and lower parts — compared to when you use a bench angled upward, especially past 30 degrees.

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Pro

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Against

Evidence from Studies

Supporting (1)

34

Community contributions welcome

34

Effect of Five Bench Inclinations on the Electromyographic Activity of the Pectoralis Major, Anterior Deltoid, and Triceps Brachii during the Bench Press Exercise

Cross-Sectional Study

Human

2020 Oct 8

The study found that the chest muscles are most active when bench pressing on a flat bench, and less active when using steeper angles, which supports the idea that the flat bench is best for working the middle and lower chest.

Contradicting (0)

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No contradicting evidence found

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Effect of Five Bench Inclinations on the Electromyographic Activity of the Pectoralis Major, Anterior Deltoid, and Triceps Brachii during the Bench Press Exercise

Score: 34

DOI: 10.3390/ijerph17197339

Similar Assertions

If you're a guy who lifts weights and doing the bench press with a medium-heavy weight, setting the bench at a 30-degree angle might fire up your upper chest muscles the most compared to flatter or steeper angles.

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When you do bench presses on a flat bench vs. a slightly angled one, different parts of your chest muscle get worked more — the lower chest works harder on a flat bench, while the upper chest works harder when the bench is tilted up.

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When healthy guys lift weights on flat and slightly angled benches, their chest muscle movement and activation patterns don’t really change — so any differences in how the muscle fires are probably not because of how they’re moving.

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When guys who lift weights do the incline bench press, the steeper the angle, the more their front shoulder muscles work — especially at 60 degrees, where it's working the hardest.

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When guys who work out regularly do a flat bench press with a normal weight, their chest and front shoulder muscles are working just as hard as each other.

34

0

78%