How can I make body joint stiffness go away?

Use them. Excerise is great for joints but should find out what is causing the stiffness before staring. Stretch is essential. Check with your doc, they may want you on nsaids.
Get Evaluated. Get an evaluation so you can get a proper diagnosis and treat options.

Related Questions

How can I make my body joint stiffness go away with yoga or tai chi?

Either. Both are excellent to work with. I like yoga due to the stretching and balancing component. Patients who have more neuromuscular problems, dizziness issues, back problems find tai chi more helpful. I would try both out and see if it helps. Also drink more water since dehydration from caffeine, not enuf water makes the joints hurt. Use glucosamine and curcumin for joint pain. Read more...