I was going to add this to the Tip Page but I think it's too important to miss.
This tip isn't exclusive to painters. It goes for rerooters, jewelers, photographers and seamstresses too. There are a few dangers inherent to our professions that can shorten the life of your career, namely back problems and joint issues like carpal tunnel syndrome, arthritis and tendonitis. Remember to take the time to give yourself a good stretch every other hour or so. If you can pick up a yoga or pilates class or even do it at home, even better. Strong core=strong back=longer career=less stress. You may not think you have the time or money to invest in yourself but think of how much money you will lose if you can't do your job anymore.