Both the right exercise and not obsessing about a change or pain in your body is a good way to get rid of join pains, trapped nerves, stiff muscles, etc.

Obviously people should watch out for the signs of common chronic diseases, but in my experience I get far more aches and pains when being less active. Going to the gym once or twice a week and doing some compound exercises will help vastly, even after just a few weeks of regular exercise.

Oh, and get a good chair if you are sitting a lot, it's definitely worth it.