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  • In 2018, more than 108,000 people

  • finished ultramarathons in the US alone.

  • An ultramarathon is any race longer than 42 kilometers,

  • and races can range anywhere from 50

  • to over 4,000 kilometers.

  • But one of the more common lengths

  • covers about 100 kilometers

  • and takes on average 17 hours to finish.

  • In some of the longer races,

  • half the runners never see the finish line,

  • and that's because these races not only push you

  • to your mental limit, they take a toll on your body

  • both inside and out.

  • Ultrarunners endure some pretty extreme conditions.

  • The Badwater Ultramarathon, for example,

  • covers 4,000 meters of elevation through Death Valley

  • in July, one of the hottest months of the year.

  • Temperatures can reach up to 47 degrees Celsius,

  • causing headaches and dizziness in many runners.

  • But even if you're running in more comfortable weather,

  • you could still be feeling sick to your stomach.

  • One of the most common issues in any ultramarathon

  • is nausea or vomiting.

  • It affects about 37% of people who complete a race,

  • but it's also the No. 1 reason

  • runners won't finish in the first place.

  • That's because running disrupts your digestion.

  • It diverts blood away from your stomach to your muscles,

  • and since ultramarathons last so long,

  • many races provide sandwiches, pasta,

  • and other carb-loaded meals.

  • But as a result, that food will just sit around

  • undigested causing a lot of problems.

  • But if your stomach isn't slowing you down,

  • your eyes could be causing you grief.

  • Windy conditions can dry out or damage the cells

  • that pump a protective liquid layer

  • over your cornea, which can cause it to swell up

  • and blur your vision.

  • During the Hellgate 100K, for example,

  • runners report losing most of their vision

  • by the end of the race.

  • They call it Hellgate Eyes.

  • But no amount of protection or preparation

  • can prevent one symptom: That's sleepiness.

  • For a 17-hour race, it might not be so bad,

  • but longer races can stretch for more than 24 hours,

  • which can make sleepy runners more prone to trips and falls

  • or worse: hallucinations.

  • The Barkley Marathons, for example,

  • is a race where runners are given 60 hours

  • to finish 161 kilometers.

  • In 2005, one runner reported that he thought he saw houses

  • at the top of the mountain

  • and believed he was their garbage man

  • sent to pick up their trash.

  • Despite these health hazards,

  • ultrarunning is a growing sport, believe it or not.

  • One study found that compared to marathoners,

  • ultrarunners are more likely to do it for nature

  • and a sense of purpose than for the competitive aspect.

  • So if you're up for the challenge,

  • plenty of races are on trails through natural areas.

  • So at least you'll get a great view.

  • You might be hallucinating

  • that you're someone's garbage man, but it will look pretty.

In 2018, more than 108,000 people

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B1 INT race stomach finish causing garbage longer

What Happens To Your Body During An Ultramarathon

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    林宜悉 posted on 2020/11/05
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