Promoting Active Living Among People With Metastatic Breast Cancer

This study is testing a smartphone-based program designed to help people with metastatic (advanced, spread) breast cancer stay physically active. Researchers want to learn whether using fitness tracking apps and personalized support can improve health and quality of life. **You may be eligible if...** - You have been diagnosed with metastatic breast cancer - Your doctor has cleared you to participate in a physical activity study - Your doctor estimates you have at least 6 months to live - You are physically able to do light activity (ECOG score 0 or 1) - You can use a smartphone (with or without help) and are willing to download study apps - You have or can get a Gmail account to use the Fitbit app **You may NOT be eligible if...** - Your doctor has said exercise is unsafe for you (e.g., uncontrolled high blood pressure or heart disease) - You have bone cancer spread that your doctor considers unstable - You have untreated brain metastases - You have been diagnosed with dementia or major memory problems - You have had a major depressive disorder diagnosis in the last 6 months - You have a serious psychiatric condition like bipolar disorder, schizophrenia, or severe alcohol problems - You are currently in the hospital or enrolled in hospice Talk to your doctor to see if this trial is right for you.