Various general exercise related discussions. Find out what it takes to reach your fitness goals through daily effective exercise. With so many options we try to find out what works best.
The position of the hands are the difference. Hammer curls: you hold the dumbbell like a hammer as you lift it, whereas in the normal curls, you can see your fingers as you lift the dumbbell.
ft says its your outer and overall biceps but I mostly feel like my forearm is getting the most work. I mostly use wide grip curls to the target the outside area of my biceps. Either way I doubt it would build much mass on your biceps compared to a curl because it doesn't seem to put too much stress (although still works) your biceps.. I don't know if you recall but arnold said something in another post that the best way to gain mass for an area would be heavy compound exercises (is that what he said?) and if you look in muscle targeting the dumbell curls are considered compound while the hammer curls are isolation.. so the dumbell curls might help w/ your goals more than the hammer curls...