. . . "* If you have to use a computer or a cell phone for a long period of time* If you have to keep focused on your work for a long period of time* If your job requires you to stand or do laborious work for a long time and if you are a person who always has cold hands and cold feet* If you have problems such as tense nerves, poor blood circulation, or stiffness and shoulder and neck pains.* If you are" . . .