I have to admit, I've never really seriously tried training with curls in a sustained, progressive manner. The most curling I've ever really done is once or twice a month or so randomly curling with a barbell, KB, or even a resistance band, out of just sheer whim or amusement on a light day. Well, now I'm going to Hawaii in about 6 weeks and if ever there was an excuse to take my curl training seriously, a beach vacation would be it. So I'd rather not use my main weightlifting barbell for curls because I keep it loaded with squat and deadlift amounts of weights. It would be much easier to bang out random sets of barbell curls if I had a second barbell. And, instead of dumbell curls, I feel like if I'm going to "waste time" doing curls, I might as well doing it standing with a barbell to get a little bit of core / full body out of it. So what kind of barbell is a good barbell, or good enough, for curls?