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2. Thermal comfort - Wikipedia

   en.wikipedia.org/wiki/Thermal_comfort

   Personal comfort systems include fans and air diffusers of various kinds (e.g. desk fans, nozzles and slot diffusers, overhead fans, high-volume low-speed fans etc.) and personalized sources of radiant or conductive heat (footwarmers, legwarmers, hot water bottles etc.).

3. Passive cooling - Wikipedia

   en.wikipedia.org/wiki/Passive_cooling

   Passive cooling covers all natural processes and techniques of heat dissipation and modulation without the use of energy. [1] Some authors consider that minor and simple mechanical systems (e.g. pumps and economizers) can be integrated in passive cooling techniques, as long they are used to enhance the effectiveness of the natural cooling process. [7]

4. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...

5. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   In summer, ceiling fans and table/floor fans circulate air within a room for the purpose of reducing the perceived temperature by increasing evaporation of perspiration on the skin of the occupants. Because hot air rises, ceiling fans may be used to keep a room warmer in the winter by circulating the warm stratified air from the ceiling to the ...

6. A 57-year-old doctor who wrote a book about getting fit after ...

   www.aol.com/news/57-old-doctor-wrote-book...

   When it comes to aerobic exercise, Wright follows the 80/20 rule, meaning she does low-intensity training, also known as zone 2 training, 80% of the time and high-intensity training the remaining 20%.

7. Comfort zone - Wikipedia

   en.wikipedia.org/wiki/Comfort_zone

   A comfort zone is a familiar psychological state where people are at ease and (perceive they are) in control of their environment, experiencing low levels of anxiety and stress. Judith Bardwick defines the term as "a behavioral state where a person operates in an anxiety-neutral position."