Country Walking Magazine (UK) - - Advice -

Ev­ery cell in your body is in­volved in com­plex chem­i­cal re­ac­tions which make a lit­tle bit of heat. Busier parts of the body, like your liver, make more heat, and your blood sys­tem works hard to move that heat around and keep all of you at a com­fort­able 37 ˚ C so ev­ery­thing works at its best po­ten­tial.

Evo­lu­tion has given us a few tricks to help us main­tain that tem­per­a­ture.

Sweat­ing is pretty ef­fec­tive at cool­ing us when we’re too hot, but we’re not so good at cop­ing when we’re too cold.

Shiv­er­ing is the best de­fence we have nat­u­rally, but it’s not par­tic­u­larly ef­fi­cient. The only other trick we have is to shut down some of the blood to our ex­trem­i­ties. The body would read­ily sac­ri­fice your hands and feet to save its core, so if you’re get­ting cold hands, it’s usu­ally a sign you’re not wear­ing enough on your body.

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