Tailored Exercise to Reduce Aromatase Inhibitor Associated Musculoskeletal Symptoms

This trial is testing a personalized exercise program designed to help breast cancer patients who are starting a type of hormone-blocking medication called an aromatase inhibitor. These drugs are very effective at preventing cancer recurrence but often cause joint pain, stiffness, and muscle aches — and this study aims to reduce those side effects through tailored exercise. **You may be eligible if:** - You have been diagnosed with breast cancer - You are about to start taking an aromatase inhibitor as part of your treatment (within the next 4 weeks) - You are able to read and write **You may NOT be eligible if:** - You have chronic arthritis - You have had heart failure or a heart attack within the past 6 months - You already exercise regularly for more than 150 minutes per week Talk to your doctor to see if this trial is right for you.