It may seem like common knowledge…but it’s not. So:
Why wear your watch on your non-dominant hand?
Well, for several pragmatic reason:
First, the obvious. Wearing a watch on your non-dominant hand means you can go about your daily activities easier, since your dominant hand is doing much of the busy work.
Second, it protects the watch. That’s right: since your dominant hand is going about more tasks, there’s less risk of injury or breakage.
And lastly, it gives your non-dominant hand a little more to do. When you use your non-dominant hand more frequently, it can increase brain power. While we don’t know if checking your watch would fit in this category, it can’t hurt, huh?