Whats a Zottman curl? Excuse my ignorance
Your excused this once (lol) To perform a Zottman curl, you simply perform a dumbell curl. Then when you begin to lower the weight, you rotate your handso that your knuckles are facing the ground. So basically it is a dumbell curl, then at the top you pronate your grip so that the knuckles on the fingers, face the floor and then begin to lower the weight.