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  2. Best and worst bedtimes for various generations - AOL

    www.aol.com/news/best-worst-bedtimes-various...

    For school-age children, a bedtime between 7:15 p.m. and 9 p.m. is generally a good idea, per Parents.com. Teenagers don't need as much sleep as children do. For teenagers between the ages of 14 ...

  3. A sleep psychologist recommends the 3-2-1 rule to help you ...

    www.aol.com/news/3-2-1-rule-expert-020757765.html

    The 3-2-1 rule. There are three things you should cut out before bed in order to achieve a better night’s sleep. Breus broke down what they are and when to quit them with these simple guidelines ...

  4. Thermal comfort - Wikipedia

    en.wikipedia.org/wiki/Thermal_comfort

    Thermal comfort is the condition of mind that expresses subjective satisfaction with the thermal environment. [1] The human body can be viewed as a heat engine where food is the input energy. The human body will release excess heat into the environment, so the body can continue to operate. The heat transfer is proportional to temperature ...

  5. When is the best time to go to sleep? Here’s what experts say

    www.aol.com/article/lifestyle/2019/08/07/when-is...

    According to Dr. Martha Cortes, a New York City-based dentist who sub-specializes in the treatment of sleep breathing disorders, you shouldn’t just lie there when you can’t sleep; you should ...

  6. Cold and heat adaptations in humans - Wikipedia

    en.wikipedia.org/wiki/Cold_and_heat_adaptations...

    Origins of heat and cold adaptations can be explained by climatic adaptation. [16] [17] Ambient air temperature affects how much energy investment the human body must make. The temperature that requires the least amount of energy investment is 21 °C (70 °F). [5] [disputed – discuss] The body controls its temperature through the hypothalamus.

  7. Human body temperature - Wikipedia

    en.wikipedia.org/wiki/Human_body_temperature

    Normal human body temperature (normothermia, euthermia) is the typical temperature range found in humans. The normal human body temperature range is typically stated as 36.5–37.5 °C (97.7–99.5 °F). [ 8 ][ 9 ] Human body temperature varies. It depends on sex, age, time of day, exertion level, health status (such as illness and menstruation ...