By M. Andrew McConnell
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February 18, 2025
When we hear the word “stress,” it’s usually with a negative connotation. Stress has been cast as the ultimate villain in the story of health and well-being, blamed for everything from sleepless nights to serious health conditions. But what if I told you that stress isn’t always the enemy? In fact, small, manageable doses of stress—whether physical, emotional, or environmental—might actually be one of the keys to resilience, growth, and even longevity. This idea is rooted in a concept called hormesis, which suggests that low-level stressors can toughen us up, activating the body’s natural defenses and preparing us to handle bigger challenges down the road. Stress, in this sense, becomes less of an obstacle and more of a training partner. The Science of Hormesis Hormesis is a fancy term for something we’ve likely all experienced: a little bit of adversity can make us stronger. Biologically, it’s the phenomenon where small doses of something that could be harmful in large amounts actually benefit us. Think of it like a vaccine—introducing a small amount of a pathogen to build immunity. In terms of longevity, hormetic stressors like mild heat exposure, calorie restriction, or physical exercise trigger survival mechanisms in the body. These mechanisms activate repair processes, improve cellular function, and, in some cases, extend lifespan. Take caloric restriction, for example. By periodically eating less (or fasting), organisms from yeast to humans activate a survival response that improves resilience. Studies show that this kind of “dietary stress” stimulates cellular repair mechanisms, increases stress resistance, and can promote a longer, healthier life. It’s one of the reasons I personally do several multi-day fasts each year—they aren’t easy, but the payoff for my body feels worth it. Exercise: The Classic Hormetic Stressor Exercise is the most familiar form of hormetic stress. Everyone knows that working out puts stress on your body: your muscles ache, your heart races, and your body burns energy. But here’s the thing: this temporary stress pushes your body to adapt. Over time, regular exercise strengthens your muscles, improves cardiovascular health, and even boosts your brain function. What’s more, this stress teaches your body to deal with oxidative damage—a natural byproduct of energy production. Exercise essentially trains your body to repair itself better and faster, making you more resilient not only in the gym but in life. Emotional and Psychological Stress: The Unexpected Ally Not all stress comes from the gym or the dinner plate. Life throws plenty of emotional and psychological curveballs our way, and while chronic stress can be harmful, short-term, manageable stressors can actually help us grow. Take the concept of post-traumatic growth. People who’ve faced adversity often come out the other side stronger, with a deeper appreciation for life, stronger relationships, and a sense of resilience. Edith Eger, a Holocaust survivor and psychologist, is one of the most inspiring examples of this. She credits her long and fulfilling life to her ability to accept and grow from the extreme hardships she endured. As she puts it, you don’t need to run from past pain—you can learn from it and use it to move forward. The lesson here? We don’t have to avoid all emotional stress. In fact, leaning into manageable challenges—whether it’s public speaking, taking on a new project, or having a tough conversation—can build confidence and emotional endurance. Environmental Stressors: Hot and Cold for Health Then there’s the stress we can’t see, but can feel—like exposure to heat or cold. These environmental stressors might sound uncomfortable (and they can be), but they can also kickstart powerful adaptive responses. For instance, sauna sessions and cold showers—two extremes of the temperature spectrum—have been shown to improve cardiovascular health and increase stress tolerance. That initial discomfort you feel is your body gearing up its defenses. Over time, it learns to handle stress better, making you tougher both physically and mentally. Dynamic Equilibrium: Finding Your Personal Stress Sweet Spot Here’s the catch: the right amount of stress isn’t the same for everyone, and even for you, it can change over time. This isn’t about finding a static balance; it’s about achieving a dynamic equilibrium—a state where the level of stress you face matches what you’re equipped to handle at any given moment. Some days, you might be ready for a high-intensity workout or a tough mental challenge. Other days, the best you can do might be a short walk or a deep breath. Both are okay. The key is recognizing where you are in that moment and adjusting accordingly. Dynamic equilibrium is about flexibility. It’s knowing that what worked for you last year, last week, or even yesterday might not be the right fit today. It’s about listening to your body and mind, respecting your limits, and embracing stress in doses that challenge you without overwhelming you. Practical Ways to Use Stress for Good Move Your Body Exercise doesn’t have to mean grueling workouts. Start with something sustainable—walks, yoga, or light strength training—and gradually increase intensity. Let your body adapt and grow stronger over time. Eat Less (Sometimes) Consider intermittent fasting or a few calorie-restricted meals under guidance. It’s not about starving yourself but giving your body the occasional stress of working harder to maintain itself. Face Life’s Challenges Head-On Avoiding stress altogether isn’t the goal. Instead, face manageable challenges with tools like mindfulness, therapy, or journaling. Every small victory builds your resilience for the bigger battles. Try Temperature Therapy Brave a cold shower or relax in a sauna. It’s uncomfortable at first, but over time, these environmental stressors can improve your tolerance for discomfort—and your overall health. Stress: A Tool for a Better Life When we rethink stress, we see it not as the enemy but as an ally in disguise. Small, manageable stressors—physical, emotional, or environmental—can strengthen us, build resilience, and ultimately, help us live longer, healthier lives. The trick is in the approach: embrace stress in doses that challenge you without overwhelming you. In doing so, you’ll discover that stress doesn’t have to be a constant battle. Instead, it can be the quiet partner that pushes you to be better, stronger, and more adaptable. So, next time you feel the pinch of stress, don’t run from it. Instead, ask yourself: what is this teaching me? How can this help me grow? You might just find that the stress you once dreaded is actually the key to a better, longer life.