Maybe a little, but I think it's more related to things like habits, ADHD and depression than IQ.
Also it's weird how these things work, for example there are some people here who get so depressed that they can't shower or brush their teeth, or maybe they eat too much, while others, when they are sad, start studying or working more and go to the gym. It's weird, I guess it's all down to chance wether you have healthy and productive coping mechanisms, or self-destructive ones. As for me, when I'm really down I lose the will to eat and sleep, but I have no problem brushing my teeth and showering when I have to.