Hmmm... could it be?

Tonight, as I do almost every night, I went to the gym to do my exercises.  One of them I do on my back on a bench, straightening my arms with 15 pound weights in each hand.  For the last 2 years my left arm has been weaker, to the point where I should really be using a lower weight - for those who do weights, you know how you really don't use a good technique when you try to use a weight that's too heavy.  Tonight, for the first time in a LONG time, I actually lifted the weight with my left arm properly, and without any greater effort than I required with my right arm.  It may seem like such a small thing, but since it was such a definite difference, it was really encouraging.