There are four key health numbers that you should know about yourself – blood pressure, blood sugar, cholesterol, and body mass index (BMI) – which Cigna calls the Core Four. Knowing your Core Four, you can identify potential risks for major chronic diseases such as diabetes and heart disease, plus knowing can help underlie health costs. Providing free health screenings throughout the weekends, Cigna’s Health Improvement Tour and their health coaches will help you understand your Core Four numbers and explain what follow-up steps to take.