American Survival Guide - - GEAR GUIDE -

The acro­nym, COLD, will help you re­mem­ber the four key things you need to do in or­der to stay warm:

• C is for “clean”: If your skin is clean, it is eas­ier for your body to reg­u­late its tem­per­a­ture. Also, clean cloth­ing re­tains its in­su­lat­ing prop­er­ties much bet­ter than dirty cloth­ing. This also ap­plies to mois­ture bar­ri­ers such as Gore-tex that allow wa­ter va­por to es­cape while keep­ing ac­tual liq­uid out.

• O is for “over­heat­ing”: Heavy ex­er­tion leads to sweat­ing, which leads to your body and cloth­ing get­ting wet. The mois­ture re­duces the in­su­lat­ing qual­i­ties of your cloth­ing and also con­ducts your body heat away from your body—which leads to your be­ing cold. Evap­o­ra­tion of the sweat will also cool your body.

• L is for “lay­ers”: Us­ing lay­ers of cloth­ing helps you reg­u­late your body tem­per­a­ture in two ways. First, the lay­ers trap air warmed by your body and keep that heat next to you. Sec­ond, you can add or re­move lay­ers to help reg­u­late your body tem­per­a­ture, de­pend­ing on your level of ac­tiv­ity and the type of weather you’re in.

• D is for “dry”: Wa­ter is an ex­cel­lent con­duc­tor of heat. Un­for­tu­nately, it con­ducts heat away from your body when you are wet from overex­er­tion or your cloth­ing is wet from snow, rain or per­spi­ra­tion.

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