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  2. Cold hands are common in winter. When are they a sign of a ...

    www.aol.com/lifestyle/cold-hands-common-winter...

    The hands typically get cold when the body or the hand specifically is exposed to cold.” Most of the time cold hands aren’t a cause for concern — they’re simply the result of less blood ...

  3. Are your hands always cold? Some answers why

    www.aol.com/hands-always-cold-answers-why...

    Raynaud’s syndrome is one of the most common causes of cold hands, according to the American Society for Surgery of the Hand. It is a disorder that causes the blood vessels that flow through the ...

  4. Hot, cold, or hand-wash? Here's what those laundry symbols on ...

    www.aol.com/hot-cold-hand-wash-heres-141500265.html

    Respectively, 30, 40, or 50 degrees Celsius means cold, warm, and hot. If a tag has a tub drawn with a hand inside, please hand-wash. Handwashing is straightforward.

  5. Hunting reaction - Wikipedia

    en.wikipedia.org/wiki/Hunting_reaction

    The hunting reaction is one out of four possible responses to immersion of the finger in cold water. The other responses observed in the fingers after immersion in cold water are a continuous state of vasoconstriction, slow steady and continuous rewarming and a proportional control form in which the blood vessel diameter remains constant after ...

  6. Thermal grill illusion - Wikipedia

    en.wikipedia.org/wiki/Thermal_grill_illusion

    The illusion is created by a grill of bars which are alternately warm, e.g. 40 °C (104 °F; 313 K), and cool, e.g. 20 °C (68 °F; 293 K). When someone presses a hand against the whole grill, they experience the illusion of burning heat. But if they press against only a cool or a warm bar, only coolness or warmth, respectively, is experienced.

  7. Cold and heat adaptations in humans - Wikipedia

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

    Humans inhabit hot climates, both dry and humid, and have done so for millions of years. Selective use of clothing and technological inventions such as air conditioning allows humans to live in hot climates. One example is the Chaamba, who live in the Sahara Desert. They wear clothing that traps air in between skin and the clothes, preventing ...

  8. Hand warmer - Wikipedia

    en.wikipedia.org/wiki/Hand_warmer

    The reaction can last 3 to 6 hours depending on whether both or only one ends of the charcoal is lit. Unlike iron-oxide based hand-warmers, charcoal handwarmers can last longer while staying hotter due to a more linear reaction rate but due to the charcoal fuel being shelf-stable they require an ignition source and produce a smokey odor when used.

  9. Gift ideas for people who are always cold: Blankets, slippers ...

    www.aol.com/lifestyle/gifts-for-people-who-are...

    It will keep you toasty warm during the cold months by quickly heating up towels, PJs, blankets and bathrobes for a spa-like treat that'll make you forget all about winter's chill.