Like I said, pots of tea. This isn't a mass-monster exercise - I'm pretty strong, and I still only use the 12s. It's a good movement to warm up the shoulder for heavier work, such as arnies or military press.

I like it supersetted with Arnies, too, and I'll drop it down to 10 when I do that.

With this one even more than other movements, form is king. Don't try to go too heavy, and don't swing. It's a controlled movement in both directions, and I really work the negatives on it.

Stand leaning forward a bit.
Lead with the outside of the arm, tilting the weights forward a bit. Elbows slightly higher than the wrists, wrists STRAIGHT and inline with your fists and arms.