How to tell the difference between ‘good’ stress and ‘bad’ stress

Whether you’re familiar with the philosopher Friedrich Nietzsche or are a fan of singer Kelly Clarkson, you’ve probably heard the phrase, “What doesn’t kill you makes you stronger.” While it sounds like a cheer for persistence during tough times, it’s also scientifically true, says Jeff Krasno, author of Good Stress: The Health Benefits of Doing Hard Things. 

“Stress, whether from physical challenges like ice baths or mental stressors like tough conversations, fosters resilience and long-term wellbeing,” he says.