Research shows that exercising at home can improve arm and hand movement after a stroke. Unfortunately, it can be hard to exercise enough to make a difference in arm and hand movement after stroke. In this study, we will try to determine things that make it easy or hard to exercise the arm and hand after a stroke. In this study, we will recruit stroke survivors who are in therapy for arm and hand rehabilitation. First, we will administer surveys and questionnaires to get stroke survivors' perspectives on their self-confidence, mood, sleep, and more. Then, we will ask them to track their home exercise for 7 days using a wearable movement tracker (like a smart watch). After the 7 days of home exercise tracking, stroke survivors will meet with a researcher to talk about their experience doing home exercise and why they think it was easy or hard to do.