Why Don't Sled Dogs Ever Get Tired?
Thanks to Squarespace for sponsoring this video! https://squarespace.com/minuteearth Sled dogs are the best endurance athletes in the world thanks to a weird quirk in their metabolism. Thanks...
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Hi, this is Kate from MinuteEarth.Humans are not the fastest mammals on the planet, but over really long distances, wecan outrun every other species on land… except certain dogs.The greatest ultramarathoners on the planet are husky/malamute mixes bred for sled racing:while pulling a load, they run five back-to-back marathons in a day, day after day, for morethan a week.That’s because of the totally unique way they turn food into energy.Like all mammals, sled dogs rely on two types of fuel: there’s glycogen, which comes fromcarbs and sugar, and is quick to ignite and fast-burning, like natural gas.And there’s fat and protein, which come from...well...fat and protein - which arenot that flammable and burn slowly, kind of like logs.Glycogen can power a runner on ...
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Hi, this is Kate from MinuteEarth.Humans are not the fastest mammals on the planet, but over really long distances, wecan outrun every other species on land… except certain dogs.The greatest ultramarathoners on the planet are husky/malamute mixes bred for sled racing:while pulling a load, they run five back-to-back marathons in a day, day after day, for morethan a week.That’s because of the totally unique way they turn food into energy.Like all mammals, sled dogs rely on two types of fuel: there’s glycogen, which comes fromcarbs and sugar, and is quick to ignite and fast-burning, like natural gas.And there’s fat and protein, which come from...well...fat and protein - which arenot that flammable and burn slowly, kind of like logs.Glycogen can power a runner on ...
