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<\/p>\nCoffee gives a quick and strong boost of energy because a cup contains almost twice as much caffeine. Tea acts gentler and more evenly: it has less caffeine, and L-theanine, which is absent in coffee, softens nervousness. Coffee is suitable for a short spurt, while tea is ideal for several hours of calm, focused work.<\/p>\n
According to the European Food Information Council (EUFIC), the estimated caffeine content is as follows:<\/p>\n
In tea,<\/span> the amount of caffeine strongly depends on the variety, the amount of leaf, water temperature, and brewing time. Matcha, which is consumed together with the leaf, and bud teas can come close to coffee. For more details, see the article [link: How much caffeine is in tea]. The European Food Safety Authority (EFSA) considers up to 400 mg of caffeine per day and up to 200 mg at a time to be safe for healthy adults [1].<\/p>\n The main difference is L-theanine. This is an amino acid that occurs naturally almost exclusively in tea leaves. It is associated with a state of calm alertness: a clear head, but without trembling hands. The caffeine in tea is partially bound to tannins, which is why it is absorbed somewhat slower. Because of this, alertness builds up more smoothly and rarely ends in a sharp energy crash.<\/p>\n In a 2008 study (Haskell et al., Biological Psychology), participants received 250 mg of L-theanine and 150 mg of caffeine. The combination reduced feelings of fatigue and drowsiness, increased alertness, and improved speed and accuracy in several tests [2]. In a 2015 study (Dodd et al., Psychopharmacology), the doses were closer to a cup of tea: 50 mg of L-theanine and 75 mg of caffeine. Here, the combination did not improve performance compared to caffeine alone [3]. The conclusion is honest: the effect of L-theanine is real, but it depends on the dose, and there is not much of it in a single cup of tea. Therefore, tea should be perceived as a milder source of energy rather than a cure for distraction.<\/p>\n Brew tea using multiple short infusions: several brief steeps provide a steady dose of caffeine over an hour or two.<\/p>\n<\/li>\n Do not drink tea on an empty stomach: it can cause nausea.<\/p>\n<\/li>\n Drink your last caffeinated cup 6\u20138 hours before bedtime.<\/p>\n<\/li>\n Drink water between cups: dehydration itself impairs concentration.<\/p>\n<\/li>\n<\/ul>\n Coffee. A cup of filter coffee contains about 90 mg of caffeine, while a cup of green tea contains about 38 mg.<\/p>\n Yes, if done gradually: first replace one cup of coffee with strong black tea or oolong, and a week later \u2014 another one.<\/p>\n For a healthy adult, 4\u20136 cups of black tea fit within the safe limit of 400 mg of caffeine per day. For pregnant women, EFSA recommends no more than 200 mg per day.<\/p>\n No. L-theanine is characteristic of tea leaves.<\/p>\n EUFIC. Caffeine levels in different foods and drinks. https:\/\/eufic.org\/en\/healthy-living\/article\/caffeine-levels-in-different-foods-and-drinks<\/a><\/p>\n<\/li>\n Haskell C. F., Kennedy D. O., Milne A. L., Wesnes K. A., Scholey A. B. The effects of L-theanine, caffeine and their combination on cognition and mood. Biological Psychology, 2008, 77(2). https:\/\/research.monash.edu\/en\/publications\/the-effects-of-l-theanine-caffeine-and-their-combination-on-cogni\/<\/a><\/p>\n<\/li>\n Dodd F. L., Kennedy D. O., Riby L. M. et al. A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood. Psychopharmacology, 2015, 232: 2563\u20132576. https:\/\/link.springer.com\/article\/10.1007%2Fs00213-015-3895-0<\/a><\/p>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":" Coffee gives a quick and strong boost of energy because a cup contains almost twice as much caffeine. Tea acts<\/p>\n","protected":false},"author":2408,"featured_media":340745,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-340999","post","type-post","status-publish","format-standard","has-post-thumbnail","category-blog-uk"],"acf":[],"_links":{"self":[{"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/posts\/340999","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/users\/2408"}],"replies":[{"embeddable":true,"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/comments?post=340999"}],"version-history":[{"count":1,"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/posts\/340999\/revisions"}],"predecessor-version":[{"id":341006,"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/posts\/340999\/revisions\/341006"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/media\/340745"}],"wp:attachment":[{"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/media?parent=340999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/categories?post=340999"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/teahouse.ua\/en\/wp-json\/wp\/v2\/tags?post=340999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Why does tea invigorate differently than coffee?<\/b><\/h2>\n
What do studies say about L-theanine and caffeine?<\/b><\/h2>\n
When is coffee better, and when is tea?
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<\/b><\/h2>\n\n\nHow to drink tea for focus<\/b><\/h2>\n
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Frequently Asked Questions<\/b><\/h2>\n
What invigorates stronger: green tea or coffee?<\/b><\/h3>\n
Can you replace coffee with tea without “withdrawal”?<\/b><\/h3>\n
How many cups of tea can you drink per day?<\/b><\/h3>\n
Is L-theanine present in coffee?<\/b><\/h3>\n
Sources:<\/b><\/h2>\n
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