It can start before you even know it: Your morning phone alarm goes off, and while the device is still in your hands, you scan the day’s headlines, and… WAIT, WHAT HAPPENED???

Suddenly, you’re feeling jangly from the adrenaline and cortisol rush that comes from the fight-or-flight response, the body’s instinctive reaction to perceived threats. While this energy boost helps during times of physical danger — slamming the brakes to avoid a car crash, running from a fire — in our relatively sedentary daily routines, it just makes us feel shaky. And the feeling can linger.