We hope to re-order this section soon, and separate different studies into different sections. We are being submitted case-studies regularly, which we wish to document alongside official experimentation.
In 1998, a university study in the UK was conducted that attempted to determine if wearing clothes while sleeping affected participants' ability to sleep restfully. Throughout this article, this will be known as experiment A. In 1999, experiment B was conducted to determine if sleeping naked with a partner resulted in participants being more sexually active. All participants in both studies, prior to taking part reported that they did not sleep naked.
45 participants were used in the study, all between the ages of 22 and 42 years old. The study lasted two weeks. Participants were provided with a video camera to record themselves while they slept, and the resulting footage was examined by a sleep professional at the end of the experiment. The participants answered questions to an interviewer every morning regarding their level of energy upon waking and their ability to fall asleep easily that night. The first week of the study was spent wearing night wear, and the second week was spent without.
Results of the study
- On average, 39 of the 45 participants agreed every morning that they found it easier to fall asleep during week two of the study in comparison to week one.
- The sleep professional examining the video footage determined that 34 of the 45 participants seemed to be sleeping more restfully during week two of the study in comparison to week one. It is known that sleeping more restfully allows the body to regenerate and repair itself more effectively, so health benefits could also be suggested as a result of sleeping naked.
- On average, 38 of the 45 participants agreed that they felt they had more energy upon waking in week two of the study, although many noted that it was hard to determine their level of alertness in a conclusive manner.
45 participants were used in the study (this figure does not include participants' partners), all between the ages of 22 and 42 years old. The study lasted two weeks, where the first week of the study was spent wearing night wear, and the second week was spent without. All participants were required to have a partner, and feel that their sex life was healthy (having sex at-least once every two weeks). The participant was not allowed to tell their partner that they were taking part in the study until it was finished, and could only suggest 'sleeping naked' for the second week of the study. If their partner declined, the participant would be ejected from the study and be replaced. The participant would keep a logbook of sexual activity for the duration of the study.
Results of the study
- On average, participants engaged in sexual activity once during the first week of the study, and twice during the second week. One participant reported engaging in sexual activity every night during the second week, having done so only twice during the first week.
- Participants noted that they felt a heightened level of arousal due to sleeping naked with their partner.
Concerns regarding 'sleeping naked' (stub: no analysis)
sleepnaked.org is currently receiving a question every 7 minutes. Common questions include:
- Does it matter if I wear boxer shorts/thong/underwear only? (No pajamas?)
sleepnaked.org response: Wearing any clothing could potentially cause discomfort while you sleep, as fabrics press against the skin and elastics cause tightness around the waist. You are more likely to roll around to alleviate the discomfort, potentially causing restless sleep.
- Skin gets 'stuck' to partner's, uncomfortable as a result.
sleepnaked.org response: Try using thinner bed sheets to help cool you down, or moving away from your partner slightly right before you fall asleep.
Contact firstname.lastname@example.org for general questions.
Effects of heat on male fertility (stub: no analysis)
From the article: "Sperm is known to develop best in cool surroundings, which is why the testicles are situated outside a man's body within the scrotum." Keeping the body cooler by sleeping naked may be beneficial for male fertility.
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