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background_hover_color_opacity=\u00a0\u00bb1&Prime; column_backdrop_filter=\u00a0\u00bbnone\u00a0\u00bb column_shadow=\u00a0\u00bbnone\u00a0\u00bb column_border_radius=\u00a0\u00bbnone\u00a0\u00bb column_link_target=\u00a0\u00bb_self\u00a0\u00bb overflow=\u00a0\u00bbvisible\u00a0\u00bb gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; width=\u00a0\u00bb5\/6&Prime; tablet_width_inherit=\u00a0\u00bbdefault\u00a0\u00bb animation_type=\u00a0\u00bbdefault\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb border_type=\u00a0\u00bbsimple\u00a0\u00bb column_border_width=\u00a0\u00bbnone\u00a0\u00bb column_border_style=\u00a0\u00bbsolid\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]\n<h2><span style=\"color: #ff6b1a;\">L&rsquo;ADAPTATION DE L&rsquo;HOMME AU FROID<\/span><\/h2>\n[\/vc_column_text][\/vc_column_inner][vc_column_inner column_padding=\u00a0\u00bbno-extra-padding\u00a0\u00bb column_padding_tablet=\u00a0\u00bbinherit\u00a0\u00bb column_padding_phone=\u00a0\u00bbinherit\u00a0\u00bb column_padding_position=\u00a0\u00bball\u00a0\u00bb column_element_direction_desktop=\u00a0\u00bbdefault\u00a0\u00bb column_element_spacing=\u00a0\u00bbdefault\u00a0\u00bb desktop_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb tablet_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb phone_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb background_color_opacity=\u00a0\u00bb1&Prime; 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icon_linea=\u00a0\u00bbicon-basic-printer\u00a0\u00bb][\/vc_column_inner][\/vc_row_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]\n<div id=\"l-homme-un-animal-a-37-c\" class=\"grid pt-header flex-align-center\">\n<div class=\"col-m-8\">\n<h3 class=\"text-primary\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-4991 alignleft\" src=\"https:\/\/www.polarpod.net\/wp-content\/uploads\/2025\/09\/02_sch_01-300x300.gif\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.polarpod.fr\/wp-content\/uploads\/2025\/09\/02_sch_01-300x300.gif 300w, https:\/\/www.polarpod.fr\/wp-content\/uploads\/2025\/09\/02_sch_01-150x150.gif 150w, https:\/\/www.polarpod.fr\/wp-content\/uploads\/2025\/09\/02_sch_01-200x200.gif 200w, https:\/\/www.polarpod.fr\/wp-content\/uploads\/2025\/09\/02_sch_01-140x140.gif 140w, https:\/\/www.polarpod.fr\/wp-content\/uploads\/2025\/09\/02_sch_01-100x100.gif 100w, https:\/\/www.polarpod.fr\/wp-content\/uploads\/2025\/09\/02_sch_01-350x350.gif 350w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><span style=\"color: #ff6b1a;\">L\u2019HOMME, UN ANIMAL \u00c0 37 \u00b0C<\/span><\/h3>\n<div>\n<p>Pour vivre, l\u2019homme doit conserver une temp\u00e9rature interne proche de 37\u00b0C. C\u2019est indispensable au fonctionnement des organes vitaux : c\u0153ur, cerveau, poumons, foie, reins, etc. Cependant, les organes p\u00e9riph\u00e9riques (peau, membres\u2026) peuvent supporter un exc\u00e8s de froid. Mais gare aux gelures (mains, pieds) et au refroidissement interne (hypothermie), qui sont tr\u00e8s graves : le c\u0153ur s\u2019arr\u00eate \u00e0 25\u00b0C !<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"un-chauffage-central-a-thermostat\" class=\"pt-header\">\n<h3><\/h3>\n<h3 class=\"text-primary\"><span style=\"color: #ff6b1a;\">UN CHAUFFAGE CENTRAL \u00c0 THERMOSTAT<\/span><\/h3>\n<p>Le corps peut lutter contre le froid. Certaines cellules de la peau le pr\u00e9viennent d\u2019un abaissement de la temp\u00e9rature ext\u00e9rieure ; aussit\u00f4t, frissons, tremblements d\u00e9gagent de l\u2019\u00e9nergie et l\u2019on a envie de se mettre en boule pour \u00e9viter les pertes de chaleur. L\u2019organisme peut aussi diminuer le d\u00e9bit sanguin sous la peau et augmenter la production de chaleur (thermor\u00e9gulation).<br \/>\nLa nourriture permet aussi de r\u00e9sister au froid (graisses, boissons chaudes\u2026).<\/p>\n<\/div>\n<div id=\"pour-se-preserver-du-froid-il-faut-se-couvrir\" class=\"grid flex-row-reverse pt-header flex-align-center\">\n<div class=\"col-m-4\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" role=\"presentation\" src=\"https:\/\/www.polarpod.fr\/uploads\/1.SEUL%20SUR%20LA%20BANQUISE\/02_sch_02.gif\" alt=\"\" width=\"400\" height=\"233\" \/><\/div>\n<div class=\"col-m-8\">\n<h3><\/h3>\n<h3 class=\"text-primary\"><span style=\"color: #ff6b1a;\">POUR SE PR\u00c9SERVER DU FROID, IL FAUT\u2026 SE COUVRIR !<\/span><\/h3>\n<div>\n<p>Le vent, l\u2019humidit\u00e9 accentuent les effets du froid sur le corps, augmentant les pertes de chaleur. Pour se prot\u00e9ger, le meilleur isolant est l\u2019air chaud, immobile. Il faut donc multiplier les couches de v\u00eatements, toujours amples, et s\u2019isoler de l\u2019ext\u00e9rieur par un coupe-vent ; mais sans transpirer pour \u00e9viter l\u2019humidit\u00e9. L\u2019habillement doit en permanence \u00eatre adapt\u00e9 aux activit\u00e9s !<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"le-corps-peut-il-s-adapter-au-froid\" class=\"pt-header\">\n<h3><\/h3>\n<h3 class=\"text-primary\"><span style=\"color: #ff6b1a;\">LE CORPS PEUT-IL S\u2019ADAPTER AU FROID ?<\/span><\/h3>\n<p>Au cours de sa marche en solitaire vers le P\u00f4le, Jean-Louis Etienne a support\u00e9 pendant des semaines un froid extr\u00eame. Au retour, sa temp\u00e9rature corporelle pouvait baisser jusqu\u2019\u00e0 35,5\u00b0C au repos, sans cons\u00e9quences : un nouvel \u00e9quilibre qui permettait des \u00e9conomies d\u2019\u00e9nergie !<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=\u00a0\u00bbin_container\u00a0\u00bb full_screen_row_position=\u00a0\u00bbmiddle\u00a0\u00bb column_margin=\u00a0\u00bbdefault\u00a0\u00bb column_direction=\u00a0\u00bbdefault\u00a0\u00bb column_direction_tablet=\u00a0\u00bbdefault\u00a0\u00bb column_direction_phone=\u00a0\u00bbdefault\u00a0\u00bb scene_position=\u00a0\u00bbcenter\u00a0\u00bb text_color=\u00a0\u00bbdark\u00a0\u00bb text_align=\u00a0\u00bbleft\u00a0\u00bb row_border_radius=\u00a0\u00bbnone\u00a0\u00bb row_border_radius_applies=\u00a0\u00bbbg\u00a0\u00bb overflow=\u00a0\u00bbvisible\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; gradient_direction=\u00a0\u00bbleft_to_right\u00a0\u00bb shape_divider_position=\u00a0\u00bbbottom\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb][vc_column column_padding=\u00a0\u00bbno-extra-padding\u00a0\u00bb column_padding_tablet=\u00a0\u00bbinherit\u00a0\u00bb column_padding_phone=\u00a0\u00bbinherit\u00a0\u00bb column_padding_position=\u00a0\u00bball\u00a0\u00bb column_element_direction_desktop=\u00a0\u00bbdefault\u00a0\u00bb column_element_spacing=\u00a0\u00bbdefault\u00a0\u00bb desktop_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb tablet_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb phone_text_alignment=\u00a0\u00bbdefault\u00a0\u00bb background_color_opacity=\u00a0\u00bb1&Prime; 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