Improving your posture is another way to prevent hand pain. Have you ever considered how poor posture can make you hold your hands in unnatural ways for long periods of time? This repetitive stress on the hands from posture can lead to hand pain and problems eventually. Most people assume that their posture only affects their neck and back. However, you can prevent pain in your hands and wrists if you have good posture.
If you have to sit for extended periods of time, make sure that you have a comfortable ergonomic chair with armrests that are low or removable. This can help you sit at the desk with your arms either parallel to the ground or slightly lowered. This can prevent hand pain if you have to type on a computer.
You should also make sure that your posture is always varied. So don't sit or stand in the same position for too long. Throughout the day, try to frequently change the way you hold a book, write, or type. This way you can avoid putting extra stress on your hands and, thus, prevent pain.