Whether you take short breaks between reps or not, your body adapts by lifting heavier weights at about the same rate—as long as you’re pushing yourself to near failure each set.

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Evidence from Studies

Supporting (1)

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Cluster sets and traditional sets elicit similar muscular hypertrophy: a volume and effort-matched study in resistance-trained individuals

Randomized Controlled Trial

Human

2025 Jun

The study found that when people lifted weights with the same level of effort (measured by how close they were to failure), both types of set styles led to similar strength gains — meaning it’s how hard you feel you’re working, not how you structure your sets, that matters most.

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No contradicting evidence found

Source Study

Cluster sets and traditional sets elicit similar muscular hypertrophy: a volume and effort-matched study in resistance-trained individuals

Score: 45

DOI: 10.1007/s00421-025-05712-6

Similar Assertions

Even though cluster sets let you rest briefly between reps, they don’t actually let you lift more total weight over time than regular sets—if you’re pushing just as hard in both.

81%

People who did more sets didn’t lift heavier weights—they just did more reps and sets. The weight stayed the same, but the total work went up.

78%

By adjusting the weight based on how close you are to failure (RIR), both types of sets end up using about the same weight—even though cluster sets seem like they should let you lift heavier.

73%