You will feel clumsy like a baby learning to walk. But that's good, very good, it means you have room for learning. The brain is able to create new paths and connexions no matter your age so an activity like this may awake zones that could have been inactive during much time.
Try some time daily, BrainsBreaker is ideal for this, an added difficulty to your jigsaw puzzles and an additional trick to be on the alert.
And it has a reward.... Did you know that you can install two mice in the computer? Two mice and your new ability to use the left hand to move the mouse is quite useful and even fun. You are free to use any hand when you decide so. Quite productive and a fresh stimulus for some rusty brain zones.
And another one: It can relieve stress of the usual hand stiffen on the mouse, giving it a rest while you use the alternate one.
And as we didn't find an image to illustrate the idea, lets put a puzzle of mice :-)
With BrainsBreaker installed, choose "Open" or double click the file when downloaded.