{"page":"\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/resources-c03aa079.css\" /\u003e\n\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/lp_boclips_stylesheets-517835be.css\" media=\"all\" /\u003e\n\u003cdiv data-title='How Does Caffeine Work as a Stimulant?' data-url='/boclips/videos/6509bea13a53974ebeab9f66' data-video-url='/boclips/videos/6509bea13a53974ebeab9f66' id='bo_player_modal'\u003e\n\u003cdiv class='boclips-resource-page modal-dialog panel-container'\u003e\n\u003cdiv class='react-notifications-root'\u003e\u003c/div\u003e\n\u003cdiv class='rp-header'\u003e\n\u003cdiv class='rp-type'\u003e\n\u003ci aria-hidden='true' class='fai fa-regular fa-circle-play'\u003e\u003c/i\u003e\nVideo\n\u003c/div\u003e\n\u003ch1 class='rp-title' id='video-title'\u003e\nHow Does Caffeine Work as a Stimulant?\n\u003c/h1\u003e\n\u003cdiv class='rp-actions'\u003e\n\u003cdiv class='mr-1'\u003e\n\u003ca class=\"btn btn-success\" data-posthog-event=\"Signup: LP Signup Activity\" data-posthog-location=\"body_link_boclips\" data-remote=\"true\" href=\"/subscription/new\"\u003e\u003cspan\u003e\u003cspan\u003eGet Free Access\u003c/span\u003e\u003cspan class=\"\"\u003e for 10 Days\u003c/span\u003e\u003cspan\u003e!\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-body'\u003e\n\u003cdiv class='rp-info'\u003e\n\u003cdiv aria-label='Hide resource details' class='rp-hide-info' role='button' tabindex='0'\u003e\u0026times;\u003c/div\u003e\n\u003ci aria-label='Expand resource details' class='rp-expand-info fai fa-solid fa-up-right-and-down-left-from-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003ci aria-label='Compress resource details' class='rp-compress-info fai fa-solid fa-down-left-and-up-right-to-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003cdiv class='rp-rating'\u003e\n\u003cspan class='resource-pool'\u003e\n\u003cspan class='pool-label'\u003ePublisher:\u003c/span\u003e\n\u003cspan class='pool-name'\u003e\n\u003cspan class='text'\u003e\u003ca data-publisher-id=\"30356011\" href=\"/search?publisher_ids%5B%5D=30356011\"\u003eCurated Video\u003c/a\u003e\u003c/span\u003e\n\u003c/span\u003e\n\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-description'\u003e\n\u003cspan class='short-description'\u003eHow does caffeine work as a stimulant? Caffeine is a naturally occurring substance found in plants and food substances—both organic and processed. It’s also a stimulant that works by blocking adenosine inside your cells. In this video I...\u003c/span\u003e\n\u003cspan class='full-description hide'\u003eHow does caffeine work as a stimulant? Caffeine is a naturally occurring substance found in plants and food substances—both organic and processed. It’s also a stimulant that works by blocking adenosine inside your cells. In this video I show you how this works. \u003cbr/\u003e \u003cbr/\u003e The following questions are answered in this video (go straight to the time stamp):\u003cbr/\u003e How does caffeine work in the brain? (0:33)\u003cbr/\u003e How does caffeine help headaches? (1:31)\u003cbr/\u003e How does caffeine hurt your sleep? (1:56)\u003cbr/\u003e What is heavy caffeine consumption? (2:25)\u003cbr/\u003e What is the caffeine content in certain foods? (3:08)\u003cbr/\u003e What are the negative effects of caffeine? (5:30)\u003cbr/\u003e When should you drink your last cup of coffee? (7:06)\u003cbr/\u003e \u003cbr/\u003e Here's a more detailed explanation.\u003cbr/\u003e Adenosine is produced in the cells of the brain and other organs. And it’s a chemical involved in inducing or bringing on sleep by slowing the activity of the cell. \u003cbr/\u003e \u003cbr/\u003e Caffeine is similar in structure to the adenosine molecule so when you drink coffee and digest it, the caffeine in the coffee travels to you brain and binds to the cells and blocks the adenosine from binding. Without the adenosine to slow things down, your adrenal glands get the signal to release the flight or fight hormone, epinephrine. \u003cbr/\u003e \u003cbr/\u003e Epinephrine –also known as adrenaline then acts to increase alertness, increase your heart rate and constrict blood vessels. \u003cbr/\u003e \u003cbr/\u003e So this is the high you get from caffeine – from the boost of adrenaline. Also as an aside, the constriction of blood vessels that follow caffeine consumption is the basis for caffeine being a part of headache medicines. It constricts the blood vessels in the brain (through the epinephrine release), which gives the tissues more space and relieves some of the tension producing the headache.\u003cbr/\u003e \u003cbr/\u003e Caffeine affects your sleep in a couple of different ways.\u003cbr/\u003e \u003cbr/\u003e First, it extends your sleep latency, which is the period of time it takes to fall asleep. It also shortens the total amount that you sleep. The older you are, the more sensitive you are to these effects. \u003cbr/\u003e \u003cbr/\u003e Similar to alcohol, caffeine has a diuretic effect, which causes the body to lose water. \u003cbr/\u003e \u003cbr/\u003e How much caffeine does it take to affect your sleep? Depending on the amount of time between consumption and going to sleep – I would say anything from 200mg of caffeine or more can create that delayed sleep effect. \u003cbr/\u003e \u003cbr/\u003e A moderate doses of caffeine would be anything between 200 and 300mg per day. \u003cbr/\u003e Heavy caffeine consumption would be considered anything from 500mg per day or more.\u003cbr/\u003e \u003cbr/\u003e Well what does that mean exactly? Here is an example: 6:40\u003cbr/\u003e \u003cbr/\u003e Imported coffees and teas can also carry higher caffeine concentration. \u003cbr/\u003e And also, the brewing method used will also affect the caffeine content.\u003cbr/\u003e \u003cbr/\u003e Once you consume the caffeine, it is digested through the stomach and small intestine and enters the bloodstream within thirty minutes to an hour. This relatively rapid response time is one of the reasons a cup of coffee is so popular as a morning crutch.\u003cbr/\u003e \u003cbr/\u003e So what about the half life?\u003cbr/\u003e The half-life is the amount of time it takes for something to decrease to half its original quantity. \u003cbr/\u003e The half-life of caffeine varies among different studies, but it is generally believed to be between 3 1/2 to 6 hours. \u003cbr/\u003e It can take longer in some people with certain medical disorders or under the influence of certain medications. \u003cbr/\u003e For example, birth control pills can inhibit or slow the half life of caffeine, making it so that it takes five to ten hours for the amount of caffeine in the bloodstream to decrease by half. Pregnancy and liver disease also significantly extend the half-life of caffeine.\u003cbr/\u003e \u003cbr/\u003e Here is a practical example:\u003cbr/\u003e \u003cbr/\u003e Suppose you were to drink a tall Starbucks coffee at 9:00am. That size has 230mg of caffeine. If we assume the caffeine carried a half-life of five hours, you would have approximately 130mg of caffeine in your system at 2:00pm that afternoon from that single cup alone. \u003cbr/\u003e \u003cbr/\u003e Now this is an approximation, but because of the variability in how we metabolize caffeine, some experts recommend not consuming any caffeine after noon. I’m in that camp. I usually recommend to people that your last drink of coffee happen before noon.\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='action-container flex justify-between'\u003e\n\u003cbutton aria-expanded='false' aria-label='Read more description' class='rp-full-description' type='button'\u003e\n\u003ci class='fai fa-solid fa-align-left'\u003e\u003c/i\u003e\n\u003cspan id='read_more'\u003eRead More\u003c/span\u003e\n\u003c/button\u003e\n\u003cdiv class='rp-report'\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv aria-labelledby='resource-details-heading' class='rp-info-section'\u003e\n\u003ch2 class='title' id='resource-details-heading'\u003eResource Details\u003c/h2\u003e\n\u003cdiv class='rp-resource-details clearfix'\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eCurator Rating\u003c/dt\u003e\n\u003cdd\u003e\u003cspan class=\"star-rating\" aria-label=\"4.0 out of 5 stars\" role=\"img\"\u003e\u003ci class=\"fa-solid fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003ci class=\"fa-solid fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003ci class=\"fa-solid fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003ci class=\"fa-solid fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003ci class=\"fa-regular fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003c/span\u003e\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt class=\"educator-rating-title\"\u003eEducator Rating\u003c/dt\u003e\u003cdd\u003e\u003cdiv class=\"educator-rating-details\" data-path=\"/educator_ratings/rrp_data?resourceable_id=82648223\u0026amp;resourceable_type=Boclips%3A%3AVideoMetadata\"\u003e\u003cspan class=\"not-yet-rated\"\u003eNot yet Rated\u003c/span\u003e\u003c/div\u003e\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eMedia Length\u003c/dt\u003e\n\u003cdd\u003e8:38\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eGrade\u003c/dt\u003e\u003cdd title=\"Grade\"\u003eHigher Ed\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eSubjects\u003c/dt\u003e\u003cdd\u003e\u003cspan\u003e\u003ca href=\"/search?grade_ids%5B%5D=259\u0026amp;search_tab_id=1\u0026amp;subject_ids%5B%5D=1319782\"\u003eCareer \u0026amp; Technical Education\u003c/a\u003e\u003c/span\u003e\u003c/dd\u003e\u003cdd class=\"text-muted\"\u003e\u003ci class=\"fa-solid fa-lock mr5\"\u003e\u003c/i\u003e1 more...\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eMedia Type\u003c/dt\u003e\u003cdd\u003e\u003cspan\u003e\u003ca href=\"/search?grade_ids%5B%5D=259\u0026amp;search_tab_id=2\u0026amp;type_ids%5B%5D=4543647\"\u003eInstructional Videos\u003c/a\u003e\u003c/span\u003e\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eSource:\u003c/dt\u003e\n\u003cdiv class='preview-source' data-animation='true' data-boundary='.rp-info' data-container='.rp-resource-details' data-html='false' data-title='I am a psychiatrist in Atlanta with over 20 years experience. This channel teaches you about mental health issues and self-improvement. Why? Because education empowers. You will learn about bipolar disorder, depression, anxiety, attention deficit disorder, schizophrenia and more. I group the videos for these topics into playlists. Youtube allows you to save playlists to your library. 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