Sleeping without clothes improves sleep quality, says research expert

Temperature is one of the most underestimated factors when it comes to sleep quality. Joseph Zielzewski, senior vice president of research and science at National Sleep Foundation, explains that a person’s core body temperature reduces by about 0.6 to 1 Celsius degree when they fall asleep. If this process is interrupted, even slightly, sleep becomes fragmented and the ability to recover significantly decreases.

Muitas People focus on light, screens, and stress as obstacles to rest, but ignore the direct impact of temperature and air circulation on the ease of falling asleep. Pequenas changes in these factors affect both the speed of falling asleep and the number of well-rested hours a person can enjoy during the night.

Comfortable microclimate as a solution

Criar a “comfortable sleeping microclimate” means preventing heat build-up between the skin, sleepwear and bedding. Para achieve this goal, different people find different solutions. Dormir naked or in very light clothing works for some. Outras prefer materials that absorb moisture quickly and dry easily.

The central objective is to allow the body to release heat naturally while maintaining a feeling of comfort and security. Isso does not follow a single formula — each organism responds differently to thermal and environmental variations.

Pessoas who tend to have cold hands and feet can maintain more stable sleep by keeping these extremities at a comfortable temperature. Curiosamente, warming your hands and feet before bed helps the body release heat more efficiently, making it easier to fall asleep. Esse contradictory mechanism — heat to cool — works because it increases peripheral vasodilation.

Experiência practical and measurable results

Brian Deva Cox, resident of Portland, Oregon, has adopted the habit of sleeping without pajamas since he was a teenager. Embora doesn’t do it every night now as an adult, it turns to this practice when comfort and recovery are top priorities, especially in periods of reduced sleep. Ele reports waking up refreshed and feeling full of energy the next day. Your smartwatch graph documents improvement in sleep quality on nights without pajamas.

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Reduzir the amount of heat retained — whether by stopping wearing pajamas or opting for lighter clothing — facilitates the release of body heat. Isso makes the cooling process more efficient during sleep onset, a critical period for maintaining deep rest.

Umidade of air and breathability of materials

Air humidity plays an equally important role in nighttime thermal regulation. Quando humidity is high, the body’s ability to regulate temperature through sweating is significantly limited. Nesse scenario, the use of materials with excellent breathability and moisture absorption in mattresses, bedding and pajamas helps reduce body temperature more efficiently.

Experts recommend:

• Manter ambient temperature between 15 to 19 degrees Celsius
• Garantir good ventilation in the room throughout the night
• Usar bedding with high moisture absorption power
• Escolher pajamas in natural fibers when necessary
• Manter at stable temperature, avoiding large fluctuations

Flexibilidade according to individual profile

Como the feeling of comfort varies from person to person, flexibility in choosing strategies is advisable. Pessoas who feel hot easily or who are experiencing hormonal changes tend to prefer temperatures a little lower than the recommended average. Mulheres during menopause, for example, often need cooler environments to maintain sleep quality.

Não simply adjust the room temperature to a lower level — it’s crucial to keep that temperature stable throughout the night. Grandes temperature fluctuations cause body temperature to increase, which can wake people up in the middle of the night and fragment deep sleep cycles.