Archive for the ‘Slow Twitch’ Category

Why We Drown

» May 4th, 2016

It’s later afternoon at the Town Lake YMCA in Austin, Texas, and a man in Lane Two is gliding through the pool with fearless perfection. His movements are languid; breathing metronomic; pace effortless. He completes lap after lap with such ease of motion that the only word that keeps coming to mind as I watch him move down the lane is natural. That’s a natural-born swimmer.

In fact he’s nothing of the sort. No human being is a natural-born swimmer.To confirm, I need only look over to the YMCA’s instructional pool, where the whole notion of being a natural-born swimmer is quickly disabused by a clutch of six physically fit adults milling anxiously in waist-deep water around Dena Garcia, a swim instructor.

They’re participants in a TOW?—“Terrified of Water”—class, and the contrast with what’s happening in Lane Two illustrates something important. At some point in time (probably very early in life), the impossibly elegant lap swimmer had to do exactly what these courageous adults were now doing in the instructional pool: confront his fears by gripping the edge and kicking, placing his face in the water and making bubbles, and allowing his body to float while avoiding a panic attack.

Exactly why we don’t instinctively swim is a mystery. But as Daniel E. Lieberman, professor of human evolutionary biology at Harvard University, explains, “It is possible that some of our ancestors swam or occasionally waded into marshes to collect sedges, but there is very little evidence that natural selection acted much on human abilities to swim.” He calls humans “slow, inefficient, and awkward as swimmers.”

Read the full story here. 

On the Road

» April 23rd, 2016

In the early 1970s, John Tarrant, a British ultramarathoner who set world records in the forty- and hundred-mile distances, suffered a hemorrhaging stomach ulcer that occasionally sent him to the hospital for tests and blood transfusions. Tarrant despised the interruptions to his training schedule, and during at least one stay, he ducked into the bathroom, changed into running gear beneath his hospital gown, and snuck outside for a quick five-miler. As Bill Jones recounts in his book The Ghost Runner, Tarrant sacrificed everything for his sport—his work, his family, and, evidently, his better judgment.

Today is the 120th Boston Marathon [this piece was originally published on April 18, 2016], and I’d wager that nearly every runner in the race would understand Tarrant’s impulse. Training for long-distance races breeds a restless need to elevate the heart rate, score an endorphin hit, and achieve what Tarrant called that “magnificent feeling of well being.” Running begets more running, an insidious cycle that can become, over time, a game of high-mileage brinkmanship that blurs the line between dedication and obsession. At the peak of his training, Tarrant was logging 180 miles a week—an addiction, no doubt, but a healthy addiction, at least according to the runners. (The doctors aren’t convinced: by 2015, running-related cardiology concerns had crystallized into something called the excessive-endurance hypothesis; google the phrase and “scarring of the heart” comes up a lot.)

Raed more.