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Repeat after us: There is nothing wrong with using weight machines.. them farther apart (so your arms make a "V" shape) to make the move more challenging.
The bicep curl machine is a good option since it encourages good posture and allows you to quickly increase or decrease your weight for each set without .
If you're adding these to your own arms workout, complete 4 sets of 15-20 reps of each. How to do it: Attach a straight cable curl bar to the cable machine, and .