{"id":638,"date":"2022-04-05T22:13:51","date_gmt":"2022-04-05T20:13:51","guid":{"rendered":"https:\/\/kavickujeme.emcubio.sk\/?p=638"},"modified":"2022-04-05T22:13:53","modified_gmt":"2022-04-05T20:13:53","slug":"kofein-a-trocha-chemie","status":"publish","type":"post","link":"https:\/\/kavickujeme.emcubio.sk\/?p=638","title":{"rendered":"Kofe\u00edn a trocha ch\u00e9mie"},"content":{"rendered":"\n<p>Ke\u010f si uvedom\u00edme, ak\u00e9 povzbudzuj\u00face \u00fa\u010dinky m\u00e1 k\u00e1va, nem\u00f4\u017eeme sa \u010dudova\u0165, \u017ee je druhou najpred\u00e1vanej\u0161ou surovinou na Zemi hne\u010f po rope. Mnoh\u00fdm z n\u00e1s pom\u00e1ha zvl\u00e1da\u0165 n\u00e1ro\u010dn\u00e9 dni a udr\u017euje n\u00e1s v bdelosti. Ale ako to funguje? Ako presne p\u00f4sob\u00ed k\u00e1va na \u013eudsk\u00fd mozog?<br>Po\u010das cel\u00e9ho d\u0148a, ke\u010f sme v bdelom stave, sa v na\u0161om mozgu pomaly hromad\u00ed chemick\u00e1 l\u00e1tka adenoz\u00edn. Adenoz\u00edn sa via\u017ee na receptory, ktor\u00e9 utlmuj\u00fa \u010dinnos\u0165 mozgu. \u010c\u00edm viac adenoz\u00ednu sa nahromad\u00ed, t\u00fdm v\u00e4\u010d\u0161iu \u00fanavu mozog poci\u0165uje. D\u00e1va to zmysel \u2013 \u010d\u00edm dlh\u0161ie ste hore, t\u00fdm viac unaven\u00ed sa c\u00edtite. Naopak, po\u010das sp\u00e1nku hladina adenoz\u00ednu kles\u00e1 a postupne v\u00e1s pripravuje na prebudenie.<br>Ukazuje sa, \u017ee \u0161trukt\u00fara kofe\u00ednu v k\u00e1ve je neuverite\u013ene podobn\u00e1 \u0161trukt\u00fare adenoz\u00ednu. Kofe\u00edn sa najsk\u00f4r krvn\u00fdm obehom dostane do mozgu, kde potom za\u010dne s\u00fa\u0165a\u017ei\u0165 s adenoz\u00ednom o v\u00e4zbov\u00e9 miesta na receptoroch. Nie je to v\u0161ak adenoz\u00edn a spom\u00ednan\u00fd pocit ospalosti sa preto nedostav\u00ed. Adenoz\u00edn u\u017e nem\u00e1 dostatok vo\u013en\u00fdch v\u00e4zbov\u00fdch miest a jeho utlmuj\u00face \u00fa\u010dinky s\u00fa oslaben\u00e9. A presne to potrebujete, ke\u010f sa c\u00edtite unaven\u00ed! Pri dlhodobej konzum\u00e1cii kofe\u00ednu mozog postupne za\u010dne vytv\u00e1ra\u0165 \u010fal\u0161ie receptory pre adenoz\u00edn a vy potrebujete v\u00e4\u010d\u0161ie mno\u017estvo kofe\u00ednu na vyvolanie rovnak\u00e9ho efektu. Preto sa pri pokusoch presta\u0165 pi\u0165 k\u00e1vu alebo zn\u00ed\u017ei\u0165 jej \u200b\u200bdenn\u00fd pr\u00edjem m\u00f4\u017eu vyskytn\u00fa\u0165 mierne abstinen\u010dn\u00e9 pr\u00edznaky. M\u00f4\u017eete poci\u0165ova\u0165 v\u00e4\u010d\u0161iu \u00fanavu ako v \u010dasoch, ke\u010f ste e\u0161te k\u00e1vu nepili.<br>P\u00f4sobenie kofe\u00ednu tu ale nekon\u010d\u00ed. Stimuluje tie\u017e produkciu horm\u00f3nu adrenal\u00ednu, zn\u00e1meho aj ako horm\u00f3n reakcie \u201ebojuj alebo ute\u010d\u201c. Ten zvy\u0161uje tepov\u00fa frekvenciu, vh\u00e1\u0148a krv do \u017e\u00edl a dokonca uvo\u013e\u0148uje d\u00fdchacie cesty. Adrenal\u00edn okrem toho ovplyv\u0148uje aj hladinu dopam\u00ednu t\u00fdm, \u017ee zabra\u0148uje jeho odb\u00faravaniu v mozgu, \u010do navodzuje pocit \u0161\u0165astia. Schopnos\u0165 zvy\u0161ova\u0165 hladinu dopam\u00ednu je tie\u017e d\u00f4vodom, kv\u00f4li ktor\u00e9mu je k\u00e1va mierne n\u00e1vykov\u00e1.<br>Je teda mo\u017en\u00e9 vypi\u0165 pr\u00edli\u0161 ve\u013ea k\u00e1vy?<br>Ukazuje sa, \u017ee existuje smrte\u013en\u00e1 d\u00e1vka kofe\u00ednu, ktor\u00e1 \u010din\u00ed pribli\u017ene 150 mg kofe\u00ednu na kilogram tela. Ak teda v\u00e1\u017eite 70 kilogramov, pred\u00e1vkujete sa po\u017eit\u00edm 10 500 mg kofe\u00ednu. Pre lep\u0161iu predstavu: \u0161\u00e1lka k\u00e1vy obsahuje v priemere 100 mg kofe\u00ednu, pri hmotnosti 70 kg je na smrte\u013en\u00fa d\u00e1vku potrebn\u00fdch 105 \u0161\u00e1lok. Museli by ste ich v\u0161ak vypi\u0165 v\u0161etky naraz, \u010do je prakticky nemo\u017en\u00e9, preto\u017ee tak\u00e9 mno\u017estvo k\u00e1vy nie je \u017eal\u00fadok fyzicky schopn\u00fd obsiahnu\u0165. Navy\u0161e halucin\u00e1cie a m\u00e1nia by v\u00e1s dostihli sk\u00f4r, ne\u017e by ste sa k tomuto bodu stihli dopracova\u0165.<br>Okrem toho m\u00e1 kofe\u00edn biologick\u00fd pol\u010das 6 hod\u00edn. To znamen\u00e1, \u017ee ak ste vypili \u0161tandardn\u00fa k\u00e1vu so 100 mg kofe\u00ednu, po 6 hodin\u00e1ch z neho vo va\u0161om tele zostane u\u017e len 50 mg a jeho efekt bude tie\u017e iba polovi\u010dn\u00fd. Po \u010fal\u0161\u00edch 6 hodin\u00e1ch to bude 25 mg, \u010do op\u00e4\u0165 poskytuje v\u00e4\u010d\u0161\u00ed priestor pre p\u00f4sobenie adenoz\u00ednu. Preto po\u010das d\u0148a siahame po \u010fal\u0161om hrn\u010deku k\u00e1vy, aby sme si udr\u017eali ten \u00fa\u017easn\u00fd pocit, ke\u010f sme pln\u00ed energie a pozornosti. Tak ho dopite! A u\u017eite si to opojenie\u2026 k\u00fdm trv\u00e1 \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ke\u010f si uvedom\u00edme, ak\u00e9 povzbudzuj\u00face \u00fa\u010dinky m\u00e1 k\u00e1va, nem\u00f4\u017eeme sa \u010dudova\u0165, \u017ee je druhou najpred\u00e1vanej\u0161ou surovinou na Zemi hne\u010f po rope. Mnoh\u00fdm z n\u00e1s pom\u00e1ha zvl\u00e1da\u0165 n\u00e1ro\u010dn\u00e9 dni a udr\u017euje [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":639,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.5.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kofe\u00edn a trocha ch\u00e9mie - Kavickujeme<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kofe\u00edn a trocha ch\u00e9mie - Kavickujeme\" \/>\n<meta property=\"og:description\" content=\"Ke\u010f si uvedom\u00edme, ak\u00e9 povzbudzuj\u00face \u00fa\u010dinky m\u00e1 k\u00e1va, nem\u00f4\u017eeme sa \u010dudova\u0165, \u017ee je druhou najpred\u00e1vanej\u0161ou surovinou na Zemi hne\u010f po rope. 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