The first time you stretch your biceps in each workout, it stretches the same amount—even if the second workout causes less damage overall.

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Pro

37

Against

Evidence from Studies

Supporting (0)

0

Community contributions welcome

No supporting evidence found

Contradicting (1)

37

Community contributions welcome

37

Reduced muscle lengthening during eccentric contractions as a mechanism underpinning the repeated-bout effect.

Randomized Controlled Trial

Human

2015 May 15

The study found that after the first workout, muscles didn't stretch as much during the second workout — even on the very first rep — meaning the first reps of the second workout were already different from the first workout.

Source Study

Reduced muscle lengthening during eccentric contractions as a mechanism underpinning the repeated-bout effect.

Score: 37

DOI: 10.1152/ajpregu.00338.2014

Similar Assertions

The more the biceps stretched during the first tough workout, the more strength the person lost the next day.

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When people who don't normally lift weights do a tough arm exercise twice, four weeks apart, their biceps don't stretch as much the second time, even though they're trying just as hard.

37

0

77%