Wondering if any of you guys have been using any variation of these hand exercisers and what your experience has been with them. A friend of mine seems to think they can induce carpal tunnel symptoms... I'm not sure about that haha. I hardly play guitar these days unless it's band practice and when I do play it's thrashy riffs so they can take a toll on my fret hand after a while during practice.
example:
example:
