Yes. I learned an exercise from a pianist. make a fist with both hands. Then raise your first (index finger) and ring finger together. Then lower them back to the fist, then raise your middle finder and pinkie finger together. Lower them back to fist then repeat. First & ring, then middle and pinkie. back and forth as fast as you can for a few minutes. You’re teaching your mind give independent control over two fingers that have a hard time working without each other. The exercise only increases dexterity not strength. But I find myself doing this exercise as a stress relief at work, too.