This study aims to promote daily physical activity in cancer survivors who are at high risk for type 2 diabetes (T2D) by using a personalized biological-based feedback strategy. T2D is one of the most common co-occurring conditions in cancer survivors and can worsen cancer-related health outcomes, especially in those who are insufficiently active. Dr. Liao hypothesizes that seeing the immediate impacts of exercise on their biological status will motivate cancer survivors to exercise. Dr. Liao will use real-time data from continuous glucose monitor to demonstrate the acute impact of physical activity and measure daily activity levels using wearable trackers. As wearable sensor technology is constantly advancing, this study is the first step to explore how we can use wearable sensors to help people make a direct connection between their daily behaviors and health outcomes.