This study aims to evaluate the impact of a 12-week hand exercise program on pain, manual dexterity, and hand function in women experiencing hand joint pain (arthralgia) due to hormone therapy after breast cancer. Participants will be randomly assigned to either an intervention group, where they will perform specific hand exercises, or a control group, which will not receive any exercise program. Pain levels, hand function, and manual dexterity will be assessed before and after the intervention using questionnaires and functional tests. The goal is to determine whether targeted hand exercises can improve pain and daily hand use in this population.