“I never get stressed!” said no one ever. Stress affects us all, but why exactly do we feel it and what causes it? Fitbit research scientist Samy Abdel-Ghaffar breaks down how we appraise a stressful situation, and how stress can impact your health. Plus, learn how Fitbit’s new Stress Management Score calculates your ability to handle stressful situations—the key to bringing more calm into your life.