{"id":20965,"date":"2026-05-01T13:12:26","date_gmt":"2026-05-01T13:12:26","guid":{"rendered":"https:\/\/www.scienceinsport.com\/sports-nutrition\/?p=20965"},"modified":"2026-05-07T08:51:57","modified_gmt":"2026-05-07T08:51:57","slug":"the-definitive-guide-to-energy-gels","status":"publish","type":"post","link":"https:\/\/www.scienceinsport.com\/sports-nutrition\/the-definitive-guide-to-energy-gels\/","title":{"rendered":"The Definitive Guide to Energy Gels"},"content":{"rendered":"\n<div class=\"wp-block-cover\"><img loading=\"lazy\" decoding=\"async\" width=\"1384\" height=\"430\" class=\"wp-block-cover__image-background wp-image-20973 size-full\" alt=\"\" src=\"https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header.png\" style=\"object-position:61% 71%\" data-object-fit=\"cover\" data-object-position=\"61% 71%\" srcset=\"https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header.png 1384w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header-300x93.png 300w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header-1024x318.png 1024w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header-768x239.png 768w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header-1280x398.png 1280w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header-40x12.png 40w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header-55x17.png 55w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Header-100x31.png 100w\" sizes=\"auto, (max-width: 1384px) 100vw, 1384px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#706158\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:23px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group introduction_with_author_group is-vertical is-layout-flex wp-container-core-group-is-layout-4fc3f8e1 wp-block-group-is-layout-flex\"><div class=\"introduction_lower\"><div class=\"author-box\">\n                <div class=\"author-avatar\"><img data-del=\"avatar\" src='https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2023\/11\/sis-logo-55x55.png' class='avatar pp-user-avatar avatar-50 photo ' height='50' width='50'\/><\/div>\n                    <div class=\"author-info\">\n                    <span class=\"written_by\">Written By<\/span>\n                    <h3>SiS Contributer <\/h3>\n                    <h6>Guest Author<\/h6>\n                <\/div>\n            <\/div><div class='duration_image'><img decoding=\"async\" class=\"lazy time_icon\" loading=\"lazy\" width=\"28\" title=\"28\" src=\"\/sports-nutrition\/wp-content\/themes\/sports-nutrition\/images\/time_icon.svg\" > 5 Min<\/div><div class='author_share'>Share <div class=\"share_buttons\"><div class=\"ss-inline-share-wrapper\"><div class=\"ss-inline-share-content\"><\/div><\/div><\/div><\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group parapgraph_group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h1 class=\"wp-block-heading\" style=\"text-align:left; font-size:54px;\">The Definitive Guide to Energy Gels <\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Energy gels: The ultimate compact, convenient, concentrated fuel source.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When your muscles run low on readily available carbs, performance drops drastically. Your pace slows, your legs feel heavy, and your motivation dips.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Energy gels are game-changers in avoiding this energy crisis.&nbsp;They solve an age-old problem:&nbsp;maintaining&nbsp;carb availability, but with manageable volume \u2013 both in your pocket and your stomach.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s&nbsp;take a closer look at exactly why&nbsp;they\u2019ve&nbsp;become indispensable, how to use them effectively, and how they can transform&nbsp;<em>your&nbsp;<\/em>performance.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Do Energy Gels Work? <\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"446\" data-id=\"20988\" src=\"https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post3.png\" alt=\"Athlete with a Science in Sport GO Isotonic Energy Gel in their pocket\" class=\"wp-image-20988\" srcset=\"https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post3.png 700w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post3-300x191.png 300w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post3-40x25.png 40w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post3-55x35.png 55w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post3-100x64.png 100w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">During exercise, your body relies heavily on glycogen, the carbohydrate stored in your muscles and liver. The problem? Limited supply. Even when&nbsp;you\u2019ve&nbsp;preloaded well, after 60\u201390 minutes of&nbsp;hard work, your stores begin to run low, and fatigue sets in.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s where endurance gels for runners and cyclists are so effective. They:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Provide fast-acting carbs<\/li>\n\n\n\n<li>Delay glycogen depletion<\/li>\n\n\n\n<li>Stabilise energy levels <\/li>\n<\/ul>\n\n\n\n<div style=\"height:19px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">What&#8217;s in a Sports Gel?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">They&#8217;re mainly carbs in the form of simple sugars \u2013 glucose, fructose, or maltodextrin (or blends of these). Some also have electrolytes or caffeine for added benefits.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With your blood flow focused on the work&nbsp;you\u2019re&nbsp;getting through, you&nbsp;don\u2019t&nbsp;need the extra effort and distraction of chewing and digesting solids. Gels get to working muscles quickly and easily.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Both the flavours and textures are designed with one simple goal \u2013 to get the gel into your system and working, with minimum stress for you and your gut.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You know precisely how many carbs&nbsp;you\u2019re&nbsp;getting. And, once&nbsp;you\u2019re&nbsp;familiar with taking gels \u2013 which&nbsp;doesn\u2019t&nbsp;take long \u2013 this transforms your energy management. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Let&#8217;s Get The Basics Right<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Gels are a brilliant on-the-move top\u2011up tool. But&nbsp;they\u2019re&nbsp;no replacement for a solid foundation. They work best when the fundamentals are in place:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Get your food right.<\/strong> Balanced, light, nutritious, carb-focused meals remain essential. Avoid fibrous options. <\/li>\n\n\n\n<li>&nbsp;<strong>Never neglect hydration. <\/strong>Start hydrated and maintain it throughout your session. It always goes hand in hand with fuelling. <\/li>\n\n\n\n<li><strong>Do the numbers.<\/strong> Always think grams of carbs per hour. Build gels into your overall strategy, taking all other energy sources into account. <\/li>\n<\/ul>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">When To Take Your Energy Gels<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Timing matters. Take a gel too early, and it&#8217;s unnecessary. Take it too late, and you&#8217;ll already be struggling. Your gut needs time to absorb the carbs. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In a competitive event, working out a strategy is crucial. Waiting until you feel tired, then playing catch-up, is a mistake. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So, plan. Fuel early, fuel consistently. With the right combination of products and the right knowledge, you can treat fuelling as a positive strength. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Different Types of Energy Gels<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Gels&nbsp;don\u2019t&nbsp;do&nbsp;one-size-fits-all.&nbsp;Each type is precisely&nbsp;formulated to do a specific job,&nbsp;fulfilling&nbsp;specific needs.&nbsp;Choosing the right one&nbsp;for your session&nbsp;will make all the difference.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let&#8217;s look at the SiS range and what each gel offers you: <\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"446\" data-id=\"20978\" src=\"https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Post1.png\" alt=\"GO Gels vs BETA Fuel Gels Infographic\" class=\"wp-image-20978\" srcset=\"https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Post1.png 700w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Post1-300x191.png 300w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Post1-40x25.png 40w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Post1-55x35.png 55w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/04\/EvergreenSiSBlog-Post1-100x64.png 100w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Energy gels can provide an effective boost to your performance. But, only if you work out your requirements and use your gels correctly. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Plan Your Session. Plan Your Fuelling<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">First, make sure your starting carb availability is good. Assess the session you&#8217;re taking on. Look at:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8211; Duration<br>&#8211; Distance<br>&#8211; Pace<br>&#8211; Intensity<br>&#8211; Conditions (heat and humidity increase carb and electrolyte needs)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Matching fuel supply to demand is the key here. We often say &#8220;fuel for the work required&#8221;. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Which Gel For Which Session?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">So, you&#8217;re ready to get gels working for you. You&#8217;re wondering what the best gel is for running, cycling, or your specific sport. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Some sample scenarios: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You&#8217;re new to gels and ready for a more structured approach to fuelling. The <a href=\"https:\/\/www.scienceinsport.com\/sis-go-isotonic-energy-gel-pack\">GO Isotonic Energy Gel<\/a> is your ideal entry point.<\/li>\n\n\n\n<li>You&#8217;re stepping up to more demanding endurance work. Your carbs-per-hour needs will be significantly higher. The <a href=\"https:\/\/www.scienceinsport.com\/shop-sis\/go-range\/beta-fuel\">BETA Fuel Range <\/a>is your go-to. <\/li>\n\n\n\n<li>You&#8217;ve got an event with particular challenges due to conditions or duration. Now the <a href=\"https:\/\/www.scienceinsport.com\/sis-go-energy-electrolyte-gels-pack\">electrolyte<\/a> and <a href=\"https:\/\/www.scienceinsport.com\/sis-go-energy-caffeine-gels-pack\">caffeine gel<\/a> options come into play.<\/li>\n\n\n\n<li>You&#8217;re comfortable timing your intake to manage your energy. You&#8217;re targeting a 10K PB and want everything taken care of. The <a href=\"https:\/\/www.scienceinsport.com\/10km-bundle\">10K Race &amp; Training Pack<\/a> is tailor-made for you (available in the UK only).<\/li>\n<\/ul>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Identify which gel fits your needs. Calculate the required volume and intervals you intend to follow. You&#8217;re good to go. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Always Keep an Open Mind<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Of course, you won&#8217;t always have a&nbsp;firm and fixed plan. And races will&nbsp;rarely follow the script&nbsp;exactly. Improvisation is inevitable.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s&nbsp;vital to&nbsp;listen to your body and react.&nbsp;Don\u2019t&nbsp;be a slave to your&nbsp;planned fuelling schedule.&nbsp;Respond&nbsp;proactively&nbsp;to signals&nbsp;and situations, and&nbsp;adjust your&nbsp;intake&nbsp;accordingly.&nbsp;As you get more&nbsp;familiar with using gels,&nbsp;you\u2019ll&nbsp;find this an invaluable part of your skill set.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Effective Fuelling: Practice Makes Perfect<\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"446\" data-id=\"20991\" src=\"https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post2.png\" alt=\"Runner holding a SiS GO Isotonic+Electrolyte Gel in apple flavour\" class=\"wp-image-20991\" srcset=\"https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post2.png 700w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post2-300x191.png 300w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post2-40x25.png 40w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post2-55x35.png 55w, https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2026\/05\/EvergreenSiSBlog-Post2-100x64.png 100w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Getting used to&nbsp;gels&nbsp;takes&nbsp;a little&nbsp;time.&nbsp;By&nbsp;trying different options and&nbsp;practising&nbsp;your fuelling&nbsp;in training,&nbsp;you\u2019ll&nbsp;arrive at race day&nbsp;comfortable&nbsp;and&nbsp;relaxed.&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Start small. Test your tolerance. Build up gradually. <\/li>\n\n\n\n<li>Mix it up &#8211; variety avoids flavour fatigue. <\/li>\n\n\n\n<li>Practice fuelling on the move, at both steady and race pace. It gets easier. <\/li>\n\n\n\n<li>Establish your carrying routine. Are you putting your fuelling products in pockets, a belt, or a vest?<\/li>\n<\/ul>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Your gut is trainable. So, treat fuelling like any other skill. Work at it and build your ability and confidence. You&#8217;ll be glad you did. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ready for energy gels to change your game? Let&#8217;s go!<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It&#8217;s time to stop thinking of gels as sophisticated tools only used by elite athletes. The precise science that went into developing them&nbsp;can&nbsp;benefit&nbsp;us all&nbsp;\u2013&nbsp;both&nbsp;for&nbsp;everyday training&nbsp;and also&nbsp;for&nbsp;the challenging events we tackle.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Energy gels are for&nbsp;<em>you<\/em>&nbsp;\u2013 if you&nbsp;want to train smarter, feel stronger for longer, and perform to&nbsp;your full&nbsp;potential.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">They\u2019re&nbsp;simply&nbsp;the easiest and most effective way of fuelling on the move.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s&nbsp;time to get into&nbsp;<a href=\"https:\/\/www.scienceinsport.com\/shop-sis\/go-range\/go-gels?_gl=1*11rfk6f*_up*MQ..&amp;gclid=CjwKCAjwvqjOBhAGEiwAngeQnYSVJov0jB5rhv8luLZi9-RHeJ7KoF6sq583BwuE1DhX-0D1N4tddBoCsHcQAvD_BwE&amp;gclsrc=aw.ds&amp;gbraid=0AAAAADjrtnJPsBcGn5te67Qx8RGLCoQlJ\" target=\"_blank\" rel=\"noreferrer noopener\">energy&nbsp;gels<\/a>&nbsp;and transform your performance.&nbsp;You\u2019ll&nbsp;never look back!&nbsp;<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group written_by_group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"author_written_by\">\n                                    <div class='written_by_title'>Written By<\/div>\n                                    <div class='written_content'>\n                                        <div class='written_by_avavtar'><img data-del=\"avatar\" src='https:\/\/www.scienceinsport.com\/sports-nutrition\/wp-content\/uploads\/sites\/3\/2023\/11\/sis-logo-55x55.png' class='avatar pp-user-avatar avatar-50 photo ' height='50' width='50'\/><span class='written_by_name_mobile'>SiS Contributer <\/span><\/div>\n                                        <div class='written_by_description'>\n                                         <div class='written_by_name'>SiS Contributer <\/div>\n                                         <div class='written_by_guest'>Guest Author<\/div>\n                                          <div class='written_by_introduction'>Our wider network of athletes, scientists, and sports journalists who are hand-picked to share their expertise and experiences with the Science in Sport Community.<\/div>\n                                          <div class='written_by_link'>\n                                            <a href='https:\/\/www.scienceinsport.com\/sports-nutrition\/author\/siscontributor\/'>More articles by author<\/a>\n                                          <\/div>\n                                        <\/div>\n                                      <\/div>\n                                    <\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We&#8217;ve updated our famous overview of SiS energy gels with a definitive guide to which gel is best and when it&#8217;ll be most effective.<\/p>\n","protected":false},"author":159,"featured_media":20974,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[453,398,569,452,559,410],"tags":[],"class_list":["post-20965","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-running","category-cycling","category-fueling-guides","category-sport","category-triathlon","category-other-sports"],"acf":{"subtitle":"","product_skus":"","post_banner":false,"duration_type":"time","duration_time":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The Definitive Guide to Energy Gels -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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