How to do 21s Bicep Curls for Bigger Biceps

1 year ago
6

Performing 21 curl repetitions in quick succession creates an intense pump in your biceps, especially because you're not locking out your elbows and giving the blood a chance to escape from your muscles. As such, barbell curl 21s make an excellent finishing movement for your biceps at the end of a hard and heavy workout.

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