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Tea contains both [[theanine]] and [[caffeine]] as well as many other compounds known. {{citation needed}}
Tea contains both [[theanine]] and [[caffeine]] as well as many other compounds known. {{citation needed}} The younger the leaf, the more caffeine it tends to have.<ref>https://www.ncbi.nlm.nih.gov/pubmed/12643643</ref>
==History and culture==
{{historyStub}}
===Religious use===
Tea has been used by Buddhist monks since the Sui Dynasty (589–618 BC) to maintain a state of “mindful alertness” during long periods of meditation.<ref name="ncbi.nlm.nih.gov">http://www.ncbi.nlm.nih.gov/pubmed/18078704</ref>
==Society and culture==
===Tea cermony===
===Tea cermony===
A tea ceremony is a ritualized form of making tea practiced in Asian culture by the Chinese, Korean, Japanese, Indian, and Vietnamese.
A tea ceremony is a ritualized form of making tea practiced in Asian culture by the Chinese, Korean, Japanese, Indian, and Vietnamese.{{citation needed}}
==Subjective effects==
{{Preamble/SubjectiveEffects}}
{{effects/base
|{{effects/physical|
*'''[[Effect::Stimulation]]'''
*'''[[Effect::Frequent urination]]''' - When doses of caffeine equivalent to 2–3 cups of coffee are administered to people who have not consumed caffeine during prior days, they produce a mild increase in urinary output.<ref>Caffeine ingestion and fluid balance: a review | http://onlinelibrary.wiley.com/doi/10.1046/j.1365-277X.2003.00477.x/abstract</ref> Most people who consume caffeine, however, ingest it daily. Regular users of caffeine have been shown to develop a strong tolerance to the diuretic effect.<ref>Caffeine ingestion and fluid balance: a review | http://onlinelibrary.wiley.com/doi/10.1046/j.1365-277X.2003.00477.x/abstract</ref>
*'''[[Effect::Vasoconstriction]]''' and '''[[Vasodilation|Vasodilation]]''' - Whilst caffeine acts as a mild vasoconstrictor, its metabolite [[theobromine]] is a vasodilator and these effects are thought to cancel each other out.
*'''[[Effect::Increased blood pressure]]'''
*'''[[Effect::Increased heart rate]]'''
*'''[[Effect::Nausea]]''' - Moderate to extreme nausea has been reported to occur, typically at higher dosages.
*'''[[Effect::Stamina enhancement]]'''
}}
|{{effects/cognitive|
The cognitive effects of caffeine can be broken down into several components which progressively intensify proportional to dosage. It contains a large number of typical [[stimulant]] cognitive effects. Although negative side effects are usually mild at low to moderate dosages, they become increasingly likely to manifest themselves with higher amounts or extended usage. This particularly holds true during the offset of the experience.
The most prominent of these cognitive effects generally include:
*'''[[Effect::Analysis enhancement]]'''
*'''[[Effect::Anxiety]]'''
*'''[[Effect::Cognitive euphoria|Euphoria]]''' - This effect, when it occurs, is generally mild compared to the majority of psychoactive [[stimulants]].
*'''[[Effect::Focus enhancement]]''' - This component is most effective at low to moderate dosages as anything higher will usually impair concentration.
Tea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured leaves of the Camellia sinensis, an evergreen shrub native to Asia. The word "tea" generally implies the use of tea leaves (Camellia sinensis), but tea can be made out of many plants.
Tea contains both theanine and caffeine as well as many other compounds known. [citation needed] The younger the leaf, the more caffeine it tends to have.[1]
As a result, it may contain incomplete or wrong information. You can help by expanding it.
Religious use
Tea has been used by Buddhist monks since the Sui Dynasty (589–618 BC) to maintain a state of “mindful alertness” during long periods of meditation.[2]
Tea cermony
A tea ceremony is a ritualized form of making tea practiced in Asian culture by the Chinese, Korean, Japanese, Indian, and Vietnamese.[citation needed]
Subjective effects
Disclaimer: The effects listed below cite the Subjective Effect Index (SEI), an open research literature based on anecdotal user reports and the personal analyses of PsychonautWikicontributors. As a result, they should be viewed with a healthy degree of skepticism.
It is also worth noting that these effects will not necessarily occur in a predictable or reliable manner, although higher doses are more liable to induce the full spectrum of effects. Likewise, adverse effects become increasingly likely with higher doses and may include addiction, severe injury, or death ☠.
Frequent urination - When doses of caffeine equivalent to 2–3 cups of coffee are administered to people who have not consumed caffeine during prior days, they produce a mild increase in urinary output.[3] Most people who consume caffeine, however, ingest it daily. Regular users of caffeine have been shown to develop a strong tolerance to the diuretic effect.[4]
Vasoconstriction and Vasodilation - Whilst caffeine acts as a mild vasoconstrictor, its metabolite theobromine is a vasodilator and these effects are thought to cancel each other out.
The cognitive effects of caffeine can be broken down into several components which progressively intensify proportional to dosage. It contains a large number of typical stimulant cognitive effects. Although negative side effects are usually mild at low to moderate dosages, they become increasingly likely to manifest themselves with higher amounts or extended usage. This particularly holds true during the offset of the experience.
The most prominent of these cognitive effects generally include:
This toxicity and harm potential section is a stub.
As a result, it may contain incomplete or even dangerously wrong information! You can help by expanding upon or correcting it. Note: Always conduct independent research and use harm reduction practices if using this substance.
