No matter how many sets you do, your thigh muscles look the same on ultrasound before and up to three days after—so swelling isn’t worse with more work.

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Evidence from Studies

Supporting (1)

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Don’t Sweat the Swelling: Exercise Volume’s Transient Effects in Trained Males

Cross-Sectional Study

Human

2026 Jan 21

Even when guys did 7, 14, or 21 sets of squats, their thigh muscles swelled the same amount and for the same length of time—so more sets didn’t make muscles look or feel more swollen.

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No contradicting evidence found

Source Study

Don’t Sweat the Swelling: Exercise Volume’s Transient Effects in Trained Males

Score: 31

DOI: 10.1055/a-2791-5145

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