近期，“抱冬瓜睡觉降温”说法在社交平台走红，不少网友将冬瓜当作天然凉枕贴身降温。然而，有人竟遭遇“半夜炸瓜”！冬瓜突然破裂，大量腐臭汁水流出，把床单、地面弄脏。
A viral social-media trend in China — hugging a winter melon to stay cool at night — has taken an unpleasant turn, with dozens of users reporting that their so-called "natural cooling pillows" suddenly burst open, spewing foul-smelling fermented juice all over beds and floors.
网友晒出破裂的冬瓜
8月3日，封面新闻记者采访了成都市农林科学院高级农艺师敖清艳，揭开这个 “降温神器”背后的隐患。
降温原理：仅靠物理“吸热”，半小时变温热“湿枕头”
抱冬瓜真能降温吗？“从物理原理来看，短时间的体感清凉是真实的，但降温效果无法持久。”敖清艳介绍，新鲜冬瓜的含水量高达96%左右，吸热能力强。常温下的冬瓜温度普遍低于人体体表，贴身抱着时，体表热量迅速传导给冬瓜，给人带来丝丝凉意，这与抱着冷水袋的原理类似。
The practice involves cradling a whole melon against the body while sleeping. The logic is sound in physics: fresh winter melons are about 96 percent water, and water has a high specific heat capacity, meaning it absorbs body heat efficiently. At room temperature, the melon is noticeably cooler than human skin (36–37 C), offering a brief, pleasant chill.
然而，冬瓜本身并没有持续制冷的功能。随着人体热量不断输入，冬瓜温度会渐渐上升。大约半小时至一小时后，冬瓜的温度便会接近体温，不仅不再降温，反而会沦为一块温热的“湿枕头”。因此，这种方式只能临时解暑，绝无法实现整夜持续降温。
But the relief doesn't last. According to Ao Qingyan, a senior agronomist at the Chengdu Academy of Agriculture and Forestry Sciences, the melon has no active cooling mechanism. "After about 30 minutes to an hour, it warms up to near body temperature and becomes a damp, tepid pillow," she explained.
为何“炸瓜”：体温烘烤+汗液发酵，“内部气压”憋爆瓜皮
不少网友遭遇的“炸瓜惨案”，并非冬瓜自然开裂，而是微生物发酵引发的“爆破”。
网友晒出破裂的冬瓜
敖清艳解释，冬瓜外皮自带一层致密蜡质层，原本具有较好的密封防护作用。然而，当人们整夜贴身怀抱睡觉时，人体散发的热量与被褥的密闭环境，无异于给冬瓜搭建了一个“恒温孵化箱”；加上汗液浸润与肢体频繁摩擦，极易破坏这层表层保护膜，微小的伤口随之成为细菌、霉菌入侵的通道。
The real shocker, however, is the "explosion" phenomenon. Ao points to microbiology: the melon's rind has a natural waxy protective layer, but hours of skin contact, sweat, and friction in a warm bed can damage that barrier. Tiny cracks allow bacteria and fungi to invade the sugar-rich flesh.
在温暖潮湿的环境下，微生物大量繁殖并分解冬瓜果肉中的糖分与有机质，源源不断地产生二氧化碳等气体。由于冬瓜外皮过于密闭，气体无法排出，内部气压持续累积。当内部压力突破瓜皮承受极限时，气体就会夹杂着腐烂果肉与酸臭汁水，从瓜蒂或伤痕等薄弱处猛烈爆开。
In the warm, humid environment, microbes multiply rapidly, fermenting the pulp and producing carbon dioxide. Because the rind remains largely airtight, internal pressure builds until the melon ruptures — usually at the stem end or along a bruise — releasing a blast of rotten pulp and acidic juice.
避坑指南：请收好这套“保命法则”
若仍想体验这种网络消暑法，敖清艳也给出了科学的应对之策。
在挑选冬瓜时，应优先选择表皮完整、无凹陷和磕碰划痕的黑皮冬瓜，借助完好的蜡质层延缓细菌侵入；坚决避开瓜蒂脱落、表皮发软或局部发霉的变质瓜；体型适中即可，瓜体越大，一旦爆裂，后果越麻烦。
Choose a firm, unblemished black-skinned melon with intact wax coating; avoid any with soft spots, missing stems, or mold.
在实际使用中，敖清艳特别提醒，严禁整夜贴身怀抱。仅建议睡前短时间纳凉，入睡前应立刻将冬瓜移至床边阴凉通风处，下方可垫上旧毛巾防渗水弄脏床品。
Never hug it all night. Use it for brief pre‑sleep cooling, then remove it to a well‑ventilated spot beside the bed, placing an old towel underneath to catch condensation.
同时，要定期检查瓜体，建议一周左右更换一次，一旦摸到局部发软、异常发胀或闻到酸味，必须立即丢弃。此外，老人、孩童及皮肤易过敏人群应尽量避免贴身抱瓜，以免腐败滋生的霉菌刺激皮肤与呼吸道。
Inspect regularly. Discard the melon if it feels spongy, overly swollen, or smells sour — replace it roughly every week. Elderly people, children, and those with sensitive skin or respiratory conditions should avoid the practice altogether, as mold spores can trigger allergies.
“冬瓜只要表皮完好、不持续贴身捂着，变质速度其实很慢，整夜怀抱加温才是导致‘炸瓜’的关键。”敖清艳提醒，抱冬瓜属于低成本的临时消暑花招，存在变质炸裂、滋生霉菌等隐患，绝非理想的降温手段。
想要舒适安全地度过盛夏，空调、凉席、正规冰枕或水冷垫等方式稳定性更高、风险更低。面对网络消暑妙招，大家还需理性看待，切勿盲目跟风。
来源：封面新闻 四川日报
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