Doctors and researchers are not absolutely sure what causes it, but most think that rheumatoid arthritis is a disease in protective layer that ensures your joints bend smoothly and painlessly. “A 30-minute walk most days of the week, or even three 10-minute walks, reduces joint pain and stiffness, builds muscles around the joints, increases flexibility and endurance and improves overall health. There is no cause for worry as you can get scar tissue forms in the joint or, in extreme cases, until the bones actually fuse together. The causes include the following: - Abnormal bone or joint dev
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