Stress is your body’s natural reaction to life’s and the environment’s difficulties. It is a heightened physiological condition that equips you to respond fast to whatever happens next. The Garmin smartwatch’s all-day stress tracking is based on a well-established and scientifically proven understanding of your autonomic nervous system.
Similarly with respect to Analytics engine estimates stress levels range from 0 to 100 based on a mix of HR and HRV data. The optical heart rate sensor on the back of your device collects this information.
Your ANS manages your physiological systems to best match the expected needs of your current situation. It is divided into sympathetic and parasympathetic branches. When it comes to action, the sympathetic branch takes over. Your heart picks up speed, your arteries dilate, and your digestion is interrupted.
Why does Garmin show high stress when sleeping?
Light and Deep Sleep are detected and based primarily on sensor measurements, or the magnitude and frequency of movement during the night. This may or may not match to your physiological conditions. Just because you’re not moving doesn’t imply you’re getting better soon.