joint flexibility

What Is Rheumatoid Arthritis, Anyway? First off, let’s clear up what RA actually is. Rheumatoid arthritis isn’t your typical wear-and-tear arthritis (that’s osteoarthritis). It’s an autoimmune condition, which means your immune system mistakenly attacks your joints. Think of it as your body’s defense squad going rogue. How It Affects Joints Here’s the deal: RA mainly…