How does coffee or tea help us to keep awake?!
How does coffee or tea help us to keep awake?
Answers: Coffee & Tea has caffeine yaar, so it gives some sortta kick na, then u will not feel sleepy other than playing games.... wo wo wo...
Need a coffee now, can u prepare me one??? :( sumting to do wif de caffeine stuff i think. they contain caffeine-a natural stimulant. Coffee contains a substance, caffeine, that stimulates our muscles and accelerate our heart. In order to sleep, it is necessary that our body is relaxed. Coffee keeps awake the one who wants to work but irritates the one who wants to sleep. Coffee contains many aromatic substances and caffeine, that acts like an stimulant for the muscles and central nervous system and increases the cerebral activity. If you drink it in large quantities it can cause headache and insomnia. it has caffine which keeps us awake some how like makes your heart beat faster and makes you think more freely i think i guess i have no clue. coffee, a little bit. tea? not so much, it makes you so sleepy Caffine is an imediate stimulant but then relaxes. ( my hyperactive brother used coffee to calm down so he could concentrate in school)
Many say coffee keeps them awake. I can wake up at 2 in the morning, have a cup of coffee and go right back to sleep. hello fanaa
coffee contains caffeine which is a natural stimulant that accelerates your system, most tea are decaff so the body doesn't have a reaction to it. but some people get sleepy by drinking coffee so i think it depends on your organism.
all the best *=) caffeine and theophylline are alkaloids that're stimulants to the nervous system, when they mix in our blood thru' digestive system, they show their vasoconstrictive effect on the blood vessels, which means the blood vessels constrict transiently and are relaxed, this gives us that HIGH for a fraction of second after consumption of coffee or tea, all this happens with many physiological changes in blood, mainly increase in blood cAMP.
I dont agree with the fact that coffee and tea induce sleep, as much as i know their mode of action is STIMULATIVE not DEPRESSIVE! its true tht coffee contains caffeine which stimulates our senses on an active mode but its not in case of all it works for most of the ppl but in my case i dont take tea......no not at all ..coffee i take seldom,,,but it doesnt help me to keep awake i wonder though!!!!
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