今夜は何を纏う？

寝巻、パジャマ、下着、それとも何も着ない？

日本人の生活習慣は大きく変化し、睡眠習慣も多様になりました。寝床も畳に布団や、ベッドにブランケットとバリエーションが豊かです。ゴリラやチンパンジーは、毎晩木の枝などで新しい寝床を作ります。

また、寝るときに纏う衣服も、個人の快適の感じ方が多様化したことで、寝る時の恰好も自由になりました。Ｔシャツと短パン、パジャマ、下着、全裸と人それぞれ好みによって違います。

地域と季節の温度差

日本列島は、南は北緯24度、北は北緯46度と縦に長く、山地や盆地や海岸沿いなど住む地域によって、気温も湿度も季節によってかなり違いがあります。その一方で、恒温動物の人間は、寝床内温度は、各季節を通して一定です。寝床内の温度は末梢皮膚温と同じ31度程度に保たれています。季節によって気温が違っていても、ヒトは衣服で皮膚温を調節すれば、季節に関係なく快適な眠りを維持できます。

寝ているだけで汗をかく

睡眠中には、子供だと250ml、高齢者でも150ml以上発汗をすることが知られています。特に夏季は、寝具との接触部分が多く、産熱しやすい後頭部、背面部は発汗が多いですね。

また冬季は、肩や腰の冷えにより寝付きが悪くなります。季節によって睡眠環境を整え、睡眠時の衣服を意識するのも良いかもしれません。

今夜は何を纏う？

ちなみに昨夏、うちの子供たちの寝巻は甚平でした。ゆったりとして、風通しがよく、木綿の触り心地が気に入っていました。甚平はちょっとしたマイブームです。これからの季節にも合う冬季の甚平があればいいのですが、冬季に合う寝巻で何かお勧めはありますか？

What will you wear tonight? Bedclothes, pajamas, underwear, or nothing at all? Japanese people's lifestyles have changed dramatically, and their sleeping habits have become more diverse. Sleeping arrangements vary from tatami mats and futons to beds and blankets. Gorillas and chimpanzees make new beds out of branches and other materials every night. The clothes we wear to sleep have also become more varied, with people wearing T-shirts and shorts, pajamas, underwear, or nudity, depending on their preferences. Regional and Seasonal Temperature Differences The Japanese archipelago is long, stretching from 24 degrees north latitude in the south to 46 degrees north latitude in the north, and temperature and humidity vary considerably from season to season depending on where you live: in the mountains, in basins, or along the coast. On the other hand, for humans, who are thermostatic animals, the temperature inside the bed remains constant throughout the seasons. The temperature inside the bed is maintained at about 31 degrees Celsius, the same as the peripheral skin temperature. Even if the temperature differs from season to season, humans can maintain a comfortable sleep regardless of the season by adjusting their skin temperature with clothing. Sweating in Sleep It is known that during sleep, children perspire 250 ml, and even the elderly perspire more than 150 ml. Especially in summer, the back of the head and the back area, which have many parts in contact with bedding and are prone to heat production, perspire a lot. Also, in winter, cold shoulders and back make it difficult to fall asleep. It may be a good idea to adjust your sleeping environment according to the season and be aware of the clothing you wear when you sleep. What will you wear tonight? By the way, last summer, my children's sleepwear was “Jinbei”. They liked the relaxed, airy, and comfortable feel of the cotton. Jinbei is a bit of a boom for me. I wish there was a winter jinbei that would fit the coming season, but do you have any recommendations for a nightgown that would fit the winter season?