8 Practical Tips for Accurate Home Blood Pressure Monitor Use

4. Sit correctly: posture and arm position

Posture matters. Sit with your back supported and both feet flat on the floor — avoid crossing your legs. Rest your arm on a table or pillow so the cuff sits at heart level; if the arm is too low or too high, readings will be inaccurate. Keep the arm relaxed and still while the cuff inflates and deflates. Use a chair with a firm back rather than a soft sofa, and check that your upper arm rests comfortably on a surface at mid-chest height. If you need a small cushion to raise the arm, that’s fine. Try to stay silent and avoid moving or speaking during measurement because motion can push the numbers higher. A short household trick: place a rolled towel on the table to support the elbow and keep the cuff aligned with the heart. Practicing the same posture each time reduces variability so readings are easier to compare across days.