I am new to weight lifting and I have noticed that I am weaker in my left arm than my right. I am right handed so I guess this has some thing to do with it. My question is how do I get my left arm as strong as my right? When doing arm curles I struggle with my left arm and fell like I am not getting a good work out with my right arm. I curl with a bar then switch to dumb bells and try to do a few extra with my left arm. Is this a good way to strengthen it? I have to do less weight with my left than my right.