It's certainly understandable that you'd like to have well defined biceps, and if you're going to spend time in the gym, doing some type of curl exercise is probably going to be on your workout list.

Add Yahoo as a preferred source to see more of our stories on Google. Lots of guys skip hammer curls on arm day, but Jay Cutler swears by this often-overlooked exercise for building bicep width.

When it’s time to switch things up in your upper-body routine, hammer curls deliver a refreshing and highly effective twist on traditional biceps training. As a U.S.-based fitness writer who has ...

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