Thread: Curls - stretch or not?

I have heard that when doing biceps curls, to achieve best result, at the end of the movement the arms should be stretched with the elbows locked. This is supposed to stretch the biceps so that the curls would completely contract and stretch the biceps. But in practice I see many people not doing this. Instead at the end of the movement the forearms are still a bit lifted, elbows not locked. I feel that stretching the biceps will disable me from lifting more weight, while not locking the elbows will allow me to lift more weight.

So which is the correct form for biceps curls? Which one is more effective?

- Josh

I stretch at the end of movements, but during biceps curls I no longer allow lockout at the bottom and I almost never lockout in anything. I believe in keeping tension on the muscle, and I think locking out in most movements, especially with heavy weights, will bring touble at some point in time.

So, I dont use the excersize to do my stretching.