The-Optimal-Lymph-Flow is a patient-centered educational and behavioral program focusing on self-care risk reduction strategies to promote lymph flow and optimize BMI by targeting known lymphedma risk of compromised lymphatic system and high BMI. Easy-to-learn self-care strategies include shoulder mobility exercises to promote shoulder function, muscle-tightening-breathing, muscle-tightening-pumping exercises, and large muscle exercises to promote lymph flow and drainage, as well as general instructions to encourage nutrition-balanced (more vegetables and fruits) and portion-appropriate diet (feeling 75% full for each meal) to strive for maintaining pre-operative BMI. Table 1 describes the self-care strategies and physiological rationales. Trained nurses delivered the intervention during a 30-minute face-to-face meeting with each patient. Patients demonstrated back the shoulder exercises, muscle-tightening-breathing, and muscle-tightening-pumping exercises.