What transpires within the minds and bodies of athletes when they push the boundaries of human performance on the grandest stage of sports?

This is the captivating question explored by Alex Hutchinson, a physicist and author, in his inspiring new book, "Endure: Mind, Body, and the Astonishingly Flexible Limits of Human Performance." From the realms of extreme breath-holding to football to ultramarathons, Hutchinson delves into the astounding feats achieved by humans in the world of athletics. Here, Hutchinson takes us on a journey to dispel myths that surround the outer edges of human performance, sheds light on what truly unfolds in those pivotal moments during the games, and offers insights into how us ordinary individuals can shatter our own limitations.

The Brain, Not the Body, Dictates Endurance

Traditionally, we've perceived the human body as a machine that succumbs to exhaustion when the physical demands exceed a certain threshold. Holding our breath underwater or cycling in a sweltering room, our bodies send signals, urging us to stop. However, the power of endurance adds a layer of complexity that challenges this simplistic view. According to Hutchinson, scientific studies reveal that it's the brain that ultimately calls the shots. The brain receives information from the muscles and defines the body's limits. The feelings of fatigue or pain, such as burning legs, are not just messages from the body but also products of the brain. These "anticipatory regulations" may seem physical, but they originate in the brain, rendering our limits flexible. As Hutchinson puts it, "Your brain is truly the arbiter of physical limitations."

Endurance is a Battle of Mind Over Fatigue

Olympic athletes have spent years transforming their internal dialogue regarding pain signals. When their bodies vehemently urge them to halt, they reach deep within themselves to tap into a wellspring of physiological effort. Consider cross-country skiers racing for 50 kilometers; their swiftest pace often arrives at the race's conclusion. This hidden reserve, as Hutchinson describes it, resides in the brain. Athletes possess highly developed psychological coping skills to reinterpret pain and effectively distract themselves. Hutchinson underscores the need for serious psychological acumen in controlling one's inner monologue; it's not a skill one can acquire on the fly. Becoming aware of one's thoughts and inner voices, identifying the negative ones, and practicing substitution are all part of the process.

Apart from self-talk bolstering endurance, suggestion also influences what is commonly referred to as "exhaustion." Hutchinson references a study involving cyclists, where subliminal images of smiling or frowning faces were flashed for an imperceptible 16 milliseconds as athletes rode their bikes. When exposed to smiling faces, performance improved by approximately 12 percent.

At the current Olympics, technology is fooling the brain to achieve peak endurance

Beyond performance-enhancing substances, athletes and corporations are exploring every avenue to gain a 0.01-second advantage. At the Winter Games, the most recent technique involves transcranial direct current stimulation, often referred to as "brain stimulation headphones." A company in Silicon Valley named Halo Neuroscience is the creator of this hotly contested product. It runs a weak electrical current through the brain to alter the perception of physical exertion, ultimately enhancing power and endurance. Two members of the U.S. Nordic Combined team, Bryan and Taylor Fletcher, are among the users. Studies indicate that these headphones extend the time to exhaustion. Hutchinson predicts that sports authorities will soon need to assess the fairness of such performance enhancers.

For the rest of us, remember, embrace discomfort

Discard the notion that athletes are genetically predisposed to tolerate pain. Instead, they commit to a training regimen that revolves around sustained discomfort, often synonymous with pain, while fostering a positive inner dialogue. "Athletes experience pain just like everyone else, but they are willing to endure it for longer," Hutchinson asserts. To boost your own capacity for endurance, Hutchinson recommends embracing discomfort as a regular companion. Converting the uncomfortable into the comfortable is the very essence of propelling oneself in those final 50 meters of any endeavor.