今晚在封面下爬行之前，您应该三思而后行吗？
一轮询发现超过一半的美国人睡觉au naturel。Studies are mixed on whether what you wear to bed matters. We waded through the research to provide some answers on the supposed benefits of sleeping sans PJs.
SLEEPING NAKED COULD
…改善睡眠
Feeling overheated makes it harder to get a good night’s rest. Researchers at the University of Amsterdam成立仅升高的皮肤温度仅为0.4ºC（0.7ºF）与失眠恶化和夜间醒来有关。
俄勒冈州睡眠协会的睡眠专家兼医疗总监Daniel Root博士解释说：“如果您凉爽，您的睡眠会更好。”
但是层对于防止热量损失很重要，因此根建议在床上额外毯子，以防您感到寒冷。表演睡衣和床单由透气，吸湿的织物制成，也可以帮助调节体温。
… Rev up Your Metabolism
裸露的睡眠会降低您的核心温度，这可能有助于您减轻体重。在一个小学习of overweight men, lower bedtime temperatures were associated withhigher levels of brown fat, a healthy fat that burns calories and increases metabolism to raise your body temperature.
“我们已经知道了很长时间的这种关系，”神经科医生，睡眠专家，《睡眠解决方案》的作者克里斯·温特博士说。“裸露或在凉爽的环境中被证明会对睡眠和代谢产生积极影响[因为]需要精力来温暖凉爽的身体。”
You could get the same result from将恒温器调低为65–68ºFas well.
…增强您的身体形象
If you think you’ll be too focused on the feeling of your thighs rubbing together or the roll of skin on your stomach to drift into dreamland, think again. Researchers found spending time naked led to significant improvements in body image and self-esteem.
“If the first step to getting comfortable with your body is sleeping naked, that’s a great step,” says Dr. Alyse Kelly-Jones of the Novant Health Women’s Sexual Health & Wellness practice.
不穿衣服的情况下狂欢您最喜欢的犯罪戏剧可能是不切实际的，但是裸露的睡眠是完全可行的，尤其是如果它使您在自己的皮肤上感到更舒适。
…改善您的关系
对于夫妻来说，裸睡可以提高人际关系满意度。一个survey在1,000多名成年人中，有57％的睡眠中的人的关系感到高兴（相比之下，穿着睡衣的48％）。
“If you and your partner both sleep naked, the skin-to-skin contact will release the feel-good hormone [oxytocin],” says Fran Walfish, PsyD, a Beverly Hills, California-based relationship psychotherapist.
研究甚至显示出与皮肤增强催产素水平的非性接触。在性别期间也释放的激素与抑郁症，压力和血压降低有关。
… Preserve Sperm Quality
在2015年学习，研究人员追踪了501对夫妇12个月，以评估内衣选择与精子质量之间的联系。数据表明，白天穿着拳击手的男人比选择更紧密的内衣的人，裸露的裸露的精子质量和更高的生育能力更好。
连接与temperature, notes Root. When the testicles are too warm, it’s harder to make good sperm. Sleeping in briefs, he notes, keeps the testicles snug against the body, increasing their temperature. Sleeping naked — or wearing boxers — gives testicles more room to move, thus improving sperm quality.
……保护你的阴道
一个whopping70％的女性经历了酵母菌感染。凯利·琼斯（Kelly-Jones）表示，穿着丝滑的内衣或紧身的睡衣底部爬入床上可能会增加您患酵母菌感染的风险。
她说：“水分会导致酵母生长。”“如果您穿着可以在皮肤旁边的水分的东西，那么您将更容易受到酵母菌感染的影响。”
If you don’t want to sleep naked, at least shed your panties to allow your vagina to breathe and reduce the risk of getting a yeast infection.
…导致失眠
脱掉以避免过热可以帮助您获得更多宁静的睡眠，或者可能会导致您在夜间反复醒来。一切都归结为温度。
研究发现在寒冷温度中睡觉的男人花了更多的时间清醒，而在第2阶段睡眠, the stage associated with a lower core body temperature.结果在对女性的研究中相似：冷压力障碍的睡眠减少了花费的时间stage 3 (slow-wave) sleep，与漂流成深度睡眠有关的循环。
THE VERDICT
The takeaway, according to Root: Sleep naked or wear pajamas.
他说：“上床睡觉时，最重要的是在身体和心理上变得舒适，所以要穿（或不穿）任何适合您的东西。”
Originally published May 2018, updated with additional reporting
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