rep out

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rep out

To be unable to do any more repetitions of a strength-training exercise due to physical exhaustion. Man, my arms are out of shape. I repped out after just five bicep curls! You shouldn't just keep pushing yourself until you rep out, or you could end up really injuring yourself.
See also: out, rep

rep out

in. to do too many repetitions of an exercise and reach exhaustion. After forty crunches, he repped out. He’s got some work to do.
See also: out, rep