To protect your joints if you have rheumatoid arthritis, make some lifestyle changes. Maintain a healthy weight to lessen stress on your hips, knees, and feet. Regular exercise strengthens muscles around your joints, eases stiffness, and reduces fatigue. Opt for low-impact activities like swimming and cycling. Quit smoking, as it can worsen RA and make treatments less effective. Assistive devices like canes can reduce stress on joints. Use large joints to spare smaller ones and maintain good posture. Nutritionally, focus on omega-3 fatty acids, calcium, and vitamin D from sources like fatty fish, leafy greens, and dairy products.