{"id":610373,"date":"2024-09-05T09:00:00","date_gmt":"2024-09-05T07:00:00","guid":{"rendered":"https:\/\/gymbeam.com\/blog\/?p=610373"},"modified":"2024-09-03T11:35:59","modified_gmt":"2024-09-03T09:35:59","slug":"coffee-after-waking-up-does-it-jumpstart-your-day-or-cause-afternoon-fatigue","status":"publish","type":"post","link":"https:\/\/gymbeam.com\/blog\/coffee-after-waking-up-does-it-jumpstart-your-day-or-cause-afternoon-fatigue\/","title":{"rendered":"Coffee After Waking Up: Does It Jumpstart Your Day or Cause Afternoon Fatigue?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_72 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/gymbeam.com\/blog\/coffee-after-waking-up-does-it-jumpstart-your-day-or-cause-afternoon-fatigue\/#Caffeine_and_Its_Effects\" title=\"Caffeine and Its Effects\">Caffeine and Its Effects<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/gymbeam.com\/blog\/coffee-after-waking-up-does-it-jumpstart-your-day-or-cause-afternoon-fatigue\/#How_Does_Caffeine_Affect_Cortisol\" title=\"How Does Caffeine Affect Cortisol?\">How Does Caffeine Affect Cortisol?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/gymbeam.com\/blog\/coffee-after-waking-up-does-it-jumpstart-your-day-or-cause-afternoon-fatigue\/#Is_It_Safe_to_Drink_Coffee_on_an_Empty_Stomach\" title=\"Is It Safe to Drink Coffee on an Empty Stomach?\">Is It Safe to Drink Coffee on an Empty Stomach?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/gymbeam.com\/blog\/coffee-after-waking-up-does-it-jumpstart-your-day-or-cause-afternoon-fatigue\/#So_Whats_the_Conclusion\" title=\"So, What\u2019s the Conclusion?\">So, What\u2019s the Conclusion?<\/a><\/li><\/ul><\/nav><\/div>\n\n<p><a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/brazilian-coffee-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">Coffee<\/a> is the most widely consumed beverage globally, so it\u2019s no wonder that many people <strong>can\u2019t imagine starting their day without it.<\/strong> The sound of a coffee machine is often heard in households before anyone has even fully opened their eyes. The main active ingredient in coffee is <strong>caffeine<\/strong>, widely regarded as the most commonly used legal drug. Its effects are familiar to anyone who enjoys a <a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/blog\/is-coffee-healthy-7-reasons-why-you-should-give-it-a-go\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">good cup of coffee<\/a> or needs a boost during a busy day. Caffeine is a stimulant, making it popular not just in daily life <a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/blog\/caffeine-before-a-workout-functions-benefits-risks-and-dosage\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">but also in the world of sports<\/a>.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In recent years, morning coffee has been heavily criticised. A theory, particularly widespread <strong>on social media<\/strong>, claims that drinking <a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-when-you-stop-drinking-coffee\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">coffee<\/a>&nbsp;immediately after waking up is unwise. It suggests that this practice can lead to afternoon fatigue and disrupt the circadian rhythm due to its impact on cortisol levels. This theory is based on the idea that coffee can interfere with the body\u2019s <strong>natural circadian rhythm.<\/strong> But is there any evidence to back this up? And how does caffeine really affect our biological clock?<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"749\" src=\"https:\/\/gymbeam.sk\/blog\/wp-content\/uploads\/2024\/08\/cz_kamila_pavlickova_102022_02_optimized_4500-1124x749.png\" alt=\"Is Coffee Suitable After Waking Up?\" class=\"wp-image-609572\" title=\"Is Coffee Suitable After Waking Up?\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2024\/08\/cz_kamila_pavlickova_102022_02_optimized_4500-1124x749.png 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2024\/08\/cz_kamila_pavlickova_102022_02_optimized_4500-400x267.png 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2024\/08\/cz_kamila_pavlickova_102022_02_optimized_4500-1536x1024.png 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2024\/08\/cz_kamila_pavlickova_102022_02_optimized_4500-2048x1365.png 2048w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Caffeine_and_Its_Effects\"><\/span>Caffeine and Its Effects<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/caffeine\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">Caffeine<\/a> is a substance naturally found in coffee beans. It&#8217;s an <strong>alkaloid<\/strong> that originally served as a <strong>defence mechanism<\/strong> for the coffee plant <strong>against pests.<\/strong> Its effect on insects can be lethal. For humans, it only becomes lethal at doses above 10 grams of pure caffeine. Caffeine has the ability to bind to adenosine receptors. To understand its mechanism of action, it&#8217;s important to define adenosine and its role in the 24-hour cycle.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Adenosine<\/strong> builds up in the brain as we use energy throughout the day. When the <a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/nootropics\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">brain is working at full capacity<\/a>, a large amount of ATP is consumed, leading to the production of adenosine. Throughout the day, adenosine accumulates in the brain, signaling that it\u2019s time to sleep when it reaches high levels. During sleep, adenosine levels decrease, as the brain isn&#8217;t as active as during the day. However, during REM sleep, when the brain generates dreams, adenosine levels remain slightly elevated.&nbsp;<sup><mark class=\"has-inline-color has-orange-color\" style=\"background-color: rgba(0, 0, 0, 0);\">[1]<\/mark><\/sup><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>When adenosine binds to its receptors, it causes fatigue. However, when caffeine occupies these receptors, adenosine cannot bind, thus delaying the feeling of <a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/blog\/why-are-you-always-tired-the-7-most-common-causes-and-their-solutions\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">tiredness<\/a>. It\u2019s important to note that <strong>caffeine does not provide energy; it merely postpones fatigue.&nbsp;<\/strong><sup><mark class=\"has-inline-color has-orange-color\" style=\"background-color: rgba(0, 0, 0, 0);\">[1]<\/mark><\/sup><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>A viral theory suggests that drinking coffee immediately after waking up <strong>blocks adenosine receptors<\/strong>, causing adenosine to accumulate throughout the day. Once the caffeine leaves the receptors, the accumulated adenosine suddenly binds to them, which is believed to cause afternoon fatigue. This theory assumes that adenosine levels decrease upon waking up and then build up gradually during the day.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In reality, adenosine levels increase exponentially within the first few minutes of waking up. By the time you reach the coffee machine, your brain is already flooded with adenosine, well before you take your first sip. <strong>Therefore, delaying your morning coffee does not prevent afternoon fatigue<\/strong><strong>.&nbsp;<\/strong><sup><mark class=\"has-inline-color has-orange-color\" style=\"background-color: rgba(0, 0, 0, 0);\">[2]<\/mark><\/sup><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n    <link href=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/css\/vue\/index.css\" rel=\"preload\" as=\"style\">\n    <link href=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/js\/vue\/chunk-vendors.js\" rel=\"preload\" as=\"script\">\n    <link href=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/js\/vue\/index.js\" rel=\"preload\" as=\"script\">\n    <link data-no-optimize=\"1\" href=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/css\/vue\/index.css\" rel=\"stylesheet\">\n\n    <h2>\n        You might be interested in these products:    <\/h2>\n\n    <div data-app=\"recommended\" data-products=\"66748,258,34231,93838,33457,61459,55609,79777,79771\" ><\/div>\n\n    <script data-no-optimize=\"1\" src=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/js\/vue\/chunk-vendors.js\"><\/script>\n    <script data-no-optimize=\"1\" src=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/js\/vue\/index.js\"><\/script>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Does_Caffeine_Affect_Cortisol\"><\/span>How Does Caffeine Affect Cortisol?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Caffeine also influences cortisol levels. While cortisol is known as the stress hormone, it plays a crucial role in the body\u2019s 24-hour cycle. Cortisol levels are lowest just before sleep and <strong>begin to rise around 3:00 AM<\/strong>, peaking roughly an hour after waking up.&nbsp;<sup><mark class=\"has-inline-color has-orange-color\" style=\"background-color: rgba(0, 0, 0, 0);\">[3]<\/mark><\/sup><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>This hormone signals the body to wake up. Caffeine increases cortisol levels by approximately 30% within 60 to 120 minutes of consumption, partly due to the accompanying rise in adrenaline. <strong>Caffeine not only delays fatigue but also enhances alertness.<\/strong>&nbsp;<sup><mark class=\"has-inline-color has-orange-color\" style=\"background-color: rgba(0, 0, 0, 0);\">[4]<\/mark><\/sup><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>However, this increase in cortisol does not occur in people who regularly drink coffee. Even when it does, <strong>there is no evidence<\/strong> that caffeine disrupts the natural circadian release of cortisol.&nbsp;<sup><mark class=\"has-inline-color has-orange-color\" style=\"background-color: rgba(0, 0, 0, 0);\">[5]<\/mark><\/sup><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"749\" src=\"https:\/\/gymbeam.sk\/blog\/wp-content\/uploads\/2024\/08\/sk_mikulas_vereb_012023_15-1-1-1124x749.jpg\" alt=\"What Effect Does Caffeine Have on Cortisol?\" class=\"wp-image-609588\" title=\"What Effect Does Caffeine Have on Cortisol?\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2024\/08\/sk_mikulas_vereb_012023_15-1-1-1124x749.jpg 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2024\/08\/sk_mikulas_vereb_012023_15-1-1-400x267.jpg 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2024\/08\/sk_mikulas_vereb_012023_15-1-1-1536x1024.jpg 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2024\/08\/sk_mikulas_vereb_012023_15-1-1-2048x1365.jpg 2048w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Is_It_Safe_to_Drink_Coffee_on_an_Empty_Stomach\"><\/span>Is It Safe to Drink Coffee on an Empty Stomach?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>One common concern is whether it\u2019s safe to drink coffee on an empty stomach. Some believe it increases the risk of stomach ulcers by boosting the production of stomach acid, which, without food, might irritate the stomach lining.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Research suggests that drinking coffee on an empty stomach is generally safe, provided <strong>you don\u2019t have pre-existing conditions<\/strong> like stomach ulcers, irritable bowel syndrome, or acid reflux.&nbsp;<sup><mark class=\"has-inline-color has-orange-color\" style=\"background-color: rgba(0, 0, 0, 0);\">[6]<\/mark><\/sup><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"So_Whats_the_Conclusion\"><\/span>So, What\u2019s the Conclusion?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Drinking coffee right after waking up does not cause<\/strong> adenosine to accumulate throughout the day. By the time your coffee is ready, your brain\u2019s adenosine levels are already high, and temporarily blocking its receptors with caffeine won\u2019t lead to a sudden energy crash in the afternoon.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/blog\/genes-determine-the-effect-of-caffeine-on-the-body-how-to-maximise-its-stimulating-effects\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">Caffeine<\/a>&nbsp;also has the ability to &#8220;push&#8221; adenosine out of its receptors and replace it. After waking up, caffeine doesn\u2019t block receptors and cause adenosine to build up; instead, it occupies receptors that already have adenosine. <strong>Caffeine delays fatigue, and once its effects wear off, adenosine gradually takes over.<\/strong> Delaying your morning coffee may push back afternoon fatigue, but it might also lead to a need for another cup later in the day, which could negatively impact your sleep quality.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>The effect of caffeine on cortisol levels<\/strong> is similar to the impact of intense <a class=\"ek-link\" href=\"https:\/\/gymbeam.com\/blog\/training-plan-and-workout\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">exercise<\/a>. From the wealth of data and studies available, we know that intense exercise does not disrupt the human circadian rhythm. The same goes for caffeine. Its effects don\u2019t kick in until about an hour after drinking coffee, long after you actually drink it. For <strong>regular coffee drinkers, the cortisol response<\/strong> is almost completely <strong>suppressed.<\/strong><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In a time when many people suffer from poor&nbsp;<a href=\"https:\/\/gymbeam.com\/blog\/how-to-improve-sleep-and-how-it-affects-health-and-muscle-growth\/\" target=\"_blank\" rel=\"noreferrer noopener\">sleep<\/a>&nbsp;quality, having a cup of coffee immediately after waking up can be a valuable tool to help you get up. Ultimately, it comes down to personal preference and individual response. Some people wake up feeling refreshed, while others struggle to open their eyes. Genetics and habits play a role in this but don\u2019t forget that&nbsp;<a href=\"https:\/\/gymbeam.com\/sleep-supplements\" target=\"_blank\" rel=\"noreferrer noopener\">improving sleep quality<\/a>&nbsp;can also help, with&nbsp;<a href=\"https:\/\/gymbeam.com\/melatonin-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\">melatonin<\/a>&nbsp;being one possible aid.<\/p>\n\n\n\n<p><a href=\"https:\/\/gymbeam.com\/drinks\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><a href=\"https:\/\/gymbeam.com\/drinks\" target=\"_blank\" class=\"category-button\">\n\t<span class=\"label\">\n\t\tDrinks\t<\/span>\n\t<svg class=\"icon-cart\" focusable=\"false\">\n\t\t<use xlink:href=\"#icon-cart\"><\/use>\n\t<\/svg>\n<\/a><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><a href=\"https:\/\/gymbeam.com\/caffeine\" target=\"_blank\" class=\"category-button\">\n\t<span class=\"label\">\n\t\tCaffeine\t<\/span>\n\t<svg class=\"icon-cart\" focusable=\"false\">\n\t\t<use xlink:href=\"#icon-cart\"><\/use>\n\t<\/svg>\n<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Morning coffee has recently come under fire due to theories suggesting it might disrupt circadian rhythms or cause afternoon fatigue. But is there any truth to this claim, and what are the actual effects of caffeine on your body&#8217;s natural rhythms? This article explores the best time to drink coffee and whether having it as the first thing in the morning is truly the ideal way to start your day or if it risks upsetting your internal clock.<\/p>\n","protected":false},"author":239,"featured_media":609539,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","footnotes":""},"categories":[97],"tags":[6725,6521,7619,7631],"filter_section":[],"filter_attribute":[],"class_list":{"0":"post-610373","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-fitness-tips","8":"tag-caffeine","9":"tag-energy","10":"tag-health","11":"tag-healthy-lifestyle","12":"h-entry","13":"hentry"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Coffee After Waking Up: Does It Jumpstart Your Day or Cause Afternoon Fatigue? - GymBeam Blog<\/title>\n<meta name=\"description\" content=\"Is coffee after waking up the ideal start to your day or a way to disrupt your circadian rhythm? When is the best time to drink coffee? Find out in our article.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gymbeam.com\/blog\/coffee-after-waking-up-does-it-jumpstart-your-day-or-cause-afternoon-fatigue\/\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Coffee After Waking Up: Does It Jumpstart Your Day or Cause Afternoon Fatigue? - GymBeam Blog\" \/>\n<meta property=\"og:description\" content=\"Is coffee after waking up the ideal start to your day or a way to disrupt your circadian rhythm? When is the best time to drink coffee? 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