Okuqukethwe
Ikhofi ingesinye seziphuzo ezidume kakhulu emhlabeni. Cishe ingxenye yabantu abadala iyawuphuza. Futhi-ke, hhayi ukunambitha kuphela, kepha futhi nokwandisa amandla akho nokugxila kwakho. Ikakhulukazi, ngesikhathi sokuqeqeshwa.
Iqembu labacwaningi e-Australia, e-USA naseBrithani lenze ukuhlaziywa kwamaphepha esayensi angama-300 ngalesi sihloko ngezihloko ezicishe zibe ngu-5,000 XNUMX futhi lafinyelela eziphethweni ezithakazelisayo, ezizosiza ukuqonda ukuthi ikhofi lisiza kanjani umuntu ekuqeqesheni ezemidlalo.
Ikhofi ithuthukisa amandla
Njengoba kwenzeka, ngemuva kokuphuza i-Cup of coffee kuza ukuthi ungalindela ukuthuthuka kokusebenza kwezemidlalo ebangeni le-2 kuye ku-16% kuphela.
Labo abasabela ngokuqinile ku-caffeine bangabona ukuthuthuka okungaba ngu-16%, kepha lokhu kuyinto encane kakhulu. Kumuntu ojwayelekile intuthuko kungenzeka ibe phakathi kuka-2 no-6%.
Vele, ngokusebenza okujwayelekile, lesi sibalo singahle singabonakali sikhulu. Kepha emidlalweni yokuncintisana, ngisho nokuthuthuka okuncane uma kuqhathaniswa nokusebenza kungenza umehluko omkhulu.
Abaphenyi bathola ukuthi i-caffeine ingathuthukisa ikhono lokugijima nokugibela ibhayisikili isikhathi eside noma ihambe ibanga elithile ngesikhathi esifushane. Kungasivumela futhi ukuthi senze ukuzivocavoca okuningi ngesisindo esinikeziwe ejimini noma sandise isisindo esiphelele.
Udinga ikhofi elingakanani ngaphambi kokuzivocavoca
I-caffeine esekhofi ingahluka ngokuya ngohlobo lwamabhontshisi wekhofi, indlela yokulungiselela nosayizi wezinkomishi. Kungancika futhi nokuthi yiluphi uhlobo lwekhofi oluqinisekiswe yisiphuzo. Ngokwesilinganiso, noma kunjalo, indebe eyodwa yekhofi elenziwe ngokujwayelekile iqukethe phakathi kuka-95 kuye ku-165 mg we-caffeine.
Ochwepheshe bakholelwa ukuthi imithamo ye-caffeine ka-3 kuye ku-6 mg / kg iyadingeka ukuze kwenziwe ngcono. Lokhu kusuka ku-210 kuya ku-420 mg womuntu onesisindo esingu-70 kg. noma cishe izinkomishi ezi-2 zekhofi. Ngezizathu zokuphepha labo imvamisa abangaphuzi ikhofi kufanele baqale ngamanani aphansi.
Kuze kube nini ngaphambi kokuzivocavoca kufanele uphuze ikhofi?
Ochwepheshe batusa ukuthatha i-caffeine cishe emaminithini angama-45-90 ngaphambi kokuqeqeshwa. Ezinye izinhlobo ze-caffeine, njengekhofi, i-gum igaywa ngokushesha futhi ingadala umphumela wokuthuthukisa ukusebenza noma ngabe isetshenziswe imizuzu eyi-10 ngaphambi kokuzivocavoca.
Ingabe lokhu kusho ukuthi sonke kufanele siqale "ukulayishwa nge-caffeine"? Hhayi, mhlawumbe hhayi kuphela ngaphakathi kwesizathu. Yize abantu abathatha i-caffeine ngokuvamile ukuthuthukisa ukusebenza kwabo, kwabanye kungahle kunganakwa, noma kube yingozi. Ngoba ukweqisa i-caffeine kungaba nemiphumela engemihle ngempela, kufaka phakathi ukuqwasha, ukwethuka, ukungahlaliseki, ukucasuka kwesisu, isicanucanu, ukuhlanza nokuphathwa yikhanda.
Cishe izizathu ezi-4 zokuthi kungani ikhofi lenza ukuzivocavoca kubuke kangcono kuvidiyo engezansi:
