Do you lean into your code? That forward head and rounded shoulder posture can cause “Tech Neck”. A painful condition that restricts movement and can contribute to feelings of fatigue, vision disturbances as well as chronic neck and back pain. Spending hours on end this way can actually make the position feel completely natural, to the point that when you actually bring your shoulders back and down you may feel awkward. Try doing a few chest expansion exercises such as sitting with your hands clasped behind your back, lift your head up a bit then lift your clasped hands up gently and hold for a few seconds. Return to your starting position and then relax.