Name: 運動員為何狂吐水？（大腦的小祕密！） (Why Do Athletes Spit Out Their Water? (The Brain Hack))
Uploaded: 2026-03-17T03:44:53.000Z
Duration: 3 min 10 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

Ever watched a football match, a cycling race, or a marathon and noticed something a little gross?

你有沒有看過足球比賽、自行車賽或馬拉松，然後注意到一些有點噁心的事情？

The world's greatest athletes, at the peak of their physical performance, will grab a water bottle, take a huge refreshing gulp, and

世界上最頂尖的運動員，在體能表現的巔峰時期，會拿起水壺，大口喝下清涼的水，然後

I mean, they are sweating buckets, losing fluids by the minute, and burning thousands of calories.

我的意思是，他們大汗淋漓，每分鐘都在流失水分，還燃燒數千卡路里。

Shouldn't they be drinking more fluids, not wasting them?

他們不應該多補充水分，而不是浪費它們嗎？

Today, we're looking at the fascinating sports science behind why athletes spit water.

今天，我們要來看看運動科學中，運動員吐水的有趣原因。

To understand why they spit, we first have to look at what happens to the human body under extreme stress.

要了解他們為什麼要吐水，我們得先看看人體在極度壓力下會發生什麼事。

When an athlete sprints up and down a field for 90 minutes, their body enters survival mode.

當運動員在球場上衝刺九十分鐘時，他們的身體就會進入生存模式。

To keep the legs moving, the heart redirects blood flow away from the digestive system and sends it straight to the working muscles.

為了讓雙腿持續移動，心臟會將血液從消化系統導開，直接輸送到正在工作的肌肉。

Because the stomach is temporarily starved of blood, digestion slows down to a crawl.

因為胃暫時缺血，消化就會變得非常緩慢。

If an athlete swallows a large amount of liquid, it just sits there.

如果運動員吞下大量液體，它們就只是待在那裡。

It sloshes around, causing painful cramps, bloating, and nausea.

它們會晃來晃去，造成疼痛的抽筋、腹脹和噁心。

Imagine trying to run at top speed with a heavy water balloon bouncing in your gut.

想像一下，肚子裡有個沉重的水球在彈跳，你卻要全速奔跑。

So if they can't swallow safely, how do they get a quick energy boost?

所以如果他們無法安全地吞嚥，要如何快速補充能量呢？

Enter a scientifically proven technique called carbohydrate mouth rinsing.

這就進入了一個科學證實的技巧，叫做碳水化合物口腔沖洗。

In the early 2000s, sports scientists made an incredible discovery.

在2000年代初期，運動科學家們做了一個驚人的發現。

Those bottles you see on the sidelines aren't just filled with plain water.

你在場邊看到的那些水壺不只是裝著白開水。

They contain a highly concentrated carbohydrate and electrolyte solution.

它們含有高濃度的碳水化合物和電解質溶液。

When athletes swish the sweet liquid in their mouths for 5 to 10 seconds, carbohydrate receptors on the tongue send an immediate, powerful signal to the brain.

當運動員在嘴裡漱著這些甜甜的液體，約5到10秒鐘，舌頭上的碳水化合物受體就會立刻向大腦發出一個強烈的訊號。

嘿，高熱量的能量正在路上囉。

It instantly stops holding back its energy reserves, dropping the athlete's perception of fatigue and boosting muscle output by up to 3%.

它會立刻停止保留能量儲備，降低運動員的疲勞感，並將肌肉輸出提升高達3%。

By spitting it out, the athlete gets a neurological energy spike without the heavy, bloated stomach.

透過吐掉，運動員就能獲得神經學上的能量激增，而且不會有肚子脹脹的感覺。

Aside from brain hacking, there is also a second very practical reason.

除了腦部駭客技巧，還有第二個非常實際的原因。

When pushing to the absolute limit, athletes breathe heavily through their mouths.

當衝刺到極限時，運動員會大口用嘴巴呼吸。

This rapid moisture loss turns their natural saliva into a thick, sticky mucus.

這種快速的水分流失會讓他們自然的唾液變成濃稠、黏黏的黏液。

Swishing and spitting cold water is the fastest way to clear out that uncomfortable buildup, lubricate the mouth and keep their airways wide open for maximum oxygen intake.

漱口並吐掉冰水是清除那種不舒服的堆積物、潤滑口腔並保持呼吸道暢通以攝取最多氧氣的最快方法。

So the next time you see your favorite player spit on the pitch, you'll know they aren't just wasting water.

所以下次你看到你最喜歡的運動員在球場上吐水時，你會知道他們不只是在浪費水分。

They are literally hacking their nervous system to push past human limits.

他們實際上是在駭入自己的神經系統，突破人類極限。

If you enjoyed this quick dive into sports science, please hit that like button.

如果你喜歡這次對運動科學的快速瞭解，請幫我們按讚。

Share this video with your sports loving friends and subscribe to Simple Things Surprising Histories for more fascinating stories.

將這支影片分享給你熱愛運動的朋友，並訂閱 Simple Things Surprising Histories 頻道，以獲得更多精彩故事。