Ethan Petuchowski

“In Why Zebras Don’t Get Ulcers, Robert Sapolsky details how reactivity and your temperament are also strong predictors of how stressed-out you are likely to be. Our sensitive high reactor can be compared to a neurotic “Type A” personality. Any little thing sets them off, and once they’re going it can be hours before they settle back down. It’s easy for a high reactor to stay soaked in stress hormones for hours on end, set off by an ever-compounding series of morning traffic, meetings, bosses, co-workers, and traffic on the way home. These people set themselves off, yes, but it’s in their nature to do so. Being effectively numb to the same pressures, low-reactors can handle much more without flinching. The low reactor isn’t a psychopath, as they experience emotions and react to life-events as anyone would, but the effects of stress aren’t pronounced. It takes an extraordinary event to provoke a response, and they’re much better at turning all the coping systems off after the fact. You’d be absolutely right if you guessed that these neural and psychological differences translate to different physical outcomes. Stress is stress. Your brain is the master controller, and it doesn’t care if the threat is a third-degree burn or you clenching your teeth for 16 straight hours because you don’t know how to relax. To the high reactor, intense exercise becomes just another log on the bonfire, whereas a low reactor may not even notice.”
― Matt Perryman, Squat Every Day