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Why Are You Tired After the Beach?
在海滩放松后为什么反而更累
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Why Are You Tired After the Beach?
在海滩放松后为什么反而更累
许多人在海滩度过惬意的一天后，反而会感到极度疲劳。这是因为当我们躺着休息时，身体其实在马不停蹄地调节体温并修复受紫外线损伤的细胞，而且在沙滩上行走所消耗的能量也是平时的两倍。为了防止严重疲惫，建议经常到阴凉处休息，每小时补充水分，并避开中午12点至下午4点紫外线最强的时段。
Many people feel completely exhausted after a relaxing day at the beach.
很多人在海滩度过轻松的一天后，反而会感到精疲力竭。feel completely exhausted 精疲力竭 / relaxing day at the beach 在海滩轻松的一天
Javier Ceballos, a sports medicine specialist, says
运动医学专家哈维尔·塞瓦约斯表示，sports medicine specialist 运动医学专家
our bodies are actually working hard while we rest on the towel.
当我们躺在沙滩巾上休息时，身体其实在马不停蹄地运转。actually working hard 实际上在努力运转 / rest on the towel 在沙滩巾上休息
First, the body works constantly to maintain a stable temperature.
首先，身体为了维持恒定体温需要不断消耗能量。works constantly 持续运转 / maintain a stable temperature 维持恒定体温
This cooling process forces the heart to pump harder,
降温过程迫使心脏更加卖力地泵血，cooling process 降温过程 / pump harder 更用力地泵血
and sweating leads to mild dehydration.
而出汗则会导致轻度脱水。sweating 出汗 / leads to mild dehydration 导致轻度脱水
Young children and older adults are especially vulnerable to this strain.
幼儿和老年人对这种身体负担尤为脆弱敏感。older adults 老年人 / especially vulnerable 特别脆弱 / to this strain 对这种负担
Meanwhile, ultraviolet rays from the sun damage our skin cells.
与此同时，阳光中的紫外线会损伤我们的皮肤细胞。ultraviolet rays 紫外线 / damage skin cells 损伤皮肤细胞
The immune system responds by releasing chemical signals.
免疫系统则会通过释放化学信号物质来进行应对。immune system 免疫系统 / responds by releasing 通过释放……作出反应 / chemical signals 化学信号
These signals make us feel drowsy so the body can quietly repair the tissue.
这些信号会让人产生困意，以便身体能够静心修复受损组织。make us feel drowsy 让人昏昏欲睡 / quietly repair the tissue 悄悄修复组织
Moving around by the water also takes a hidden toll.
在水边走动其实也会暗中消耗大量的体力。Moving around 走动 / takes a hidden toll 暗中带来负担
An Italian study shows that walking on soft sand takes twice as much energy.
意大利的一项研究表明，在松软的沙滩上漫步要消耗两倍的能量。walking on soft sand 在松软沙滩上行走 / takes twice as much energy 消耗两倍的能量
To prevent severe fatigue, Ceballos suggests taking regular breaks in the shade.
为了防止严重疲惫，塞瓦约斯建议定期到阴凉处休息。prevent severe fatigue 预防严重疲惫 / regular breaks in the shade 在阴凉处定期休息
He also recommends drinking water every hour,
他还建议每小时都要喝水，recommends drinking water 建议饮水 / every hour 每小时
and avoiding the peak sun between 12 p.m. and 4 p.m.
并尽量避开中午12点至下午4点紫外线最强烈的时段。avoiding the peak sun 避开最烈的日晒
Quiz 🧠
Q1. Walking on soft sand takes more energy than walking on hard ground.
查看答案
✅ True
松软的沙子容易在脚下滑动，因此在上面行走比在坚硬的地面上需要消耗更多的能量。
Soft sand shifts under your feet, which forces your muscles to work much harder.
Q2. What does "drowsy" mean in "I feel drowsy after lunch"?
查看答案
✅ sleepy
'drowsy'指的是感到困倦、昏昏欲睡的状态。
When you are drowsy, you feel very tired and ready to fall asleep.
Q3. Why does sun damage on your skin make you feel sleepy?
查看答案
✅ To help the body heal
为了集中能量修复和愈合受损的皮肤细胞，身体会促使人去休息。
The body signals you to rest so it can focus energy on repairing damaged cells.
Dialogue 🎧
Alex: I spent four hours just lying on a beach towel yesterday, and I woke up destroyed.
Alex: 我昨天在沙滩巾上足足躺了四个小时，结果今天醒来感觉整个人都要散架了。
Olivia: You were not actually resting, though. Your body was working overtime under the sun.
Olivia: 但其实你并没有真正得到休息。在烈日下，你的身体简直就像在通宵加班一样。
Alex: Working overtime? I literally just lay there eating snacks and napping!
Alex: 加班？我真的只是躺在那里吃零食、睡午觉而已啊！
Olivia: A sports doctor, Javier Ceballos, says cooling down takes huge effort. Your heart has to pump much harder.
Olivia: 运动医生哈维尔·塞瓦约斯说，身体降温需要耗费极大的力气，心脏不得不更卖力地泵血。
Alex: Wait, just to keep our body temperature stable? That makes no sense.
Alex: 等等，只是为了维持体温恒定而已？这也太不可思议了。
Olivia: It does! Sweating cools you, but mild dehydration quickly forces your heart to work extra hard.
Olivia: 是真的！出汗虽然能降温，但轻微脱水很快就会迫使心脏超负荷运转。
Alex: Oof. That explains why my little cousins and grandparents get exhausted so fast.
Alex: 哎呀，怪不得我的小表弟和爷爷奶奶累得那么快。
Olivia: Exactly. Young children and older adults are especially vulnerable to that heat strain.
Olivia: 没错。小孩子和老年人对这种高温负荷尤其脆弱敏感。
Alex: Okay, but what about that weird drowsiness? I can barely keep my eyes open.
Alex: 好吧，那莫名其妙袭来的困意又是怎么回事？我眼睛都快睁不开了。
Olivia: Ultraviolet rays damage your skin cells. Then your immune system releases chemical signals so you sleep while it repairs.
Olivia: 因为紫外线破坏了皮肤细胞。免疫系统就会释放化学信号催你入睡，好趁机进行修复工作。
Alex: Whoa. So being drowsy is just my body sneaking in repair work?
Alex: 哇。所以犯困只是身体在偷偷‘施工抢修’啊？
Olivia: Pretty much! Plus, an Italian study found walking on soft sand takes twice as much energy.
Olivia: 差不多就是这样！而且意大利的一项研究发现，在松软的沙滩上走路要多耗费整整一倍的体力呢。
Alex: I knew it! Every single step feels like lifting weights because your feet sink.
Alex: 难怪！每走一步脚都会往下陷，感觉就像在做负重训练一样。
Olivia: To avoid severe fatigue, Ceballos suggests taking shade breaks and drinking water every hour.
Olivia: 为了避免极度疲惫，塞瓦约斯医生建议多去阴凉处休息，并且每小时都要喝水。
Alex: And we should definitely dodge the peak sun between 12 and 4 p.m.
Alex: 而且绝对要避开中午12点到下午4点之间最强烈的日晒。
Olivia: Definitely. Otherwise, you spend the whole next day stuck on your sofa recovering.
Olivia: 那是当然。否则你第二天就只能瘫在沙发上慢慢回血了。