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Within a Canadian sample of 912 people<\/a> ages 16 through 30, the sharpest signal appeared among those sleeping five hours or less.<\/p>\n Tracing that pattern in the survey, Kyle T. Ganson at the University of Toronto (U of T<\/a>) documented a link between recent pre-workout use and the shortest nights in the group.<\/p>\n The association did not spread evenly across every sleep category, which made the most extreme sleep loss stand out as the central concern.<\/p>\n That narrow but striking pattern leaves the next question hanging in plain view: what these products contain that could keep users awake long after a workout ends.<\/p>\n Why the buzz lingers<\/p>\n Many commercial powders<\/a> carry average caffeine amounts near 0.01 ounces (254 milligrams) per serving, already high for one scoop.<\/p>\n \u201cHowever, the study\u2019s findings point to potential risks to the well-being of young people who use these supplements,\u201d said Ganson.<\/p>\n Once caffeine blocks adenosine<\/a>, a brain signal that builds sleep pressure, the body stays alert longer than planned.<\/p>\n That same review found evening caffeine can delay melatonin, a hormone that helps time sleep, and push real tiredness later.<\/p>\n Sleep supports recovery<\/p>\n Across this age range, good sleep<\/a> usually means eight to ten hours for teens and at least seven for adults.<\/p>\n When that time shrinks, attention, mood, memory, and recovery suffer because the brain and body lose time meant to reset.<\/p>\n During the late teens and twenties, those lost hours matter more because emotional control, learning, and physical recovery are still under strain.<\/p>\n That helps explain why a stimulant sold for workouts can end up undermining school, work, and daily functioning.<\/p>\n Timing goes wrong<\/p>\n After classes, jobs, and commutes, many young adults train late, which pushes caffeine closer to bedtime.<\/p>\n A controlled trial<\/a> found that 0.014 ounces (400 milligrams) of caffeine could still damage sleep when taken within 12 hours of bedtime.<\/p>\n Even people who fall asleep on schedule may lose deep sleep or wake more often, leaving the next day dulled.<\/p>\n That timing problem can create a loop, since a tired person may reach for more pre-workout before the next session.<\/p>\n Hidden stimulant blends<\/p>\n Unlike plain coffee, most pre-workout products mix caffeine<\/a> with performance ingredients, flavorings, and stimulant-like compounds in one scoop.<\/p>\n Some blends hide exact amounts inside proprietary mixes, which makes it harder for buyers to know how much they take.<\/p>\n Because labels promise energy and focus, users can miss the tradeoff between a harder workout and a shorter night.<\/p>\n That confusion grows when powders sit beside routine fitness gear instead of products people would treat more cautiously.<\/p>\n Fitness culture blind spot<\/p>\n Marketing around these products often presents them as ordinary workout helpers rather than late-day stimulants.<\/p>\n \u201cYoung people often view pre-workout supplements as harmless fitness products,\u201d Ganson noted, describing a belief that can hide real risk.<\/p>\n That belief matters because tired students, shift workers, and amateur athletes may treat short sleep as normal and self-correct with more stimulation.<\/p>\n The result can look disciplined while the body gets less restorative sleep and more next-day fatigue.<\/p>\n What clinicians can ask<\/p>\n In clinics and schools, simple conversations about pre-workout use could catch a risk that routine health histories miss.<\/p>\n Pediatricians, family physicians, and social workers matter here because they often hear about mood, stress, or fatigue first.<\/p>\n Rather than brushing it off, they can ask when it is used and whether coffee or energy drinks follow.<\/p>\n That approach keeps the advice practical, because shifting timing or reducing use may help before sleep loss hardens into a habit.<\/p>\n Limits of the data<\/p>\n As strong as the pattern looks, the survey cannot prove pre-workout directly caused the lost sleep.<\/p>\n Participants reported supplement use over the past year and average sleep over the previous two weeks, so recall plays a role.<\/p>\n Researchers also lacked details on dose, brand, and workout schedules, which means not every user carried equal risk.<\/p>\n That leaves room for a second possibility, where people who already sleep too little start using pre-workout<\/a> for energy.<\/p>\n Sleep risk gains attention<\/p>\n Even with those limits, the study still showed a relative risk ratio of 2.53 for the shortest sleep group.<\/p>\n For a product used by 22.2% of this sample, that is not a fringe concern in a tiny subgroup.<\/p>\n No one paper settles the public health question, but this one sharpens concern by linking a popular supplement<\/a> to lost sleep.<\/p>\n That should put parents, coaches, clinicians, and users on notice that the energy boost can keep cutting into sleep after the workout.<\/p>\n Adjusting supplement use<\/p>\n Pre-workout products are sold as tools for performance, yet this evidence shows they may cut into the recovery performance depends on.<\/p>\n Clearer warnings, smarter timing, and better questions from adults around young users make more sense after these U of T findings.<\/p>\n The study is published in Sleep Epidemiology<\/a>.<\/p>\n \u2014\u2013<\/p>\n Like what you read?\u00a0Subscribe to our newsletter<\/a>\u00a0for engaging articles, exclusive content, and the latest updates.<\/p>\n Check us out on\u00a0EarthSnap<\/a>, a free app brought to you by\u00a0Eric Ralls<\/a>\u00a0and Earth.com.<\/p>\n \u2014\u2013<\/p>\n","protected":false},"excerpt":{"rendered":"A new study has found that young people who use pre-workout supplements are more than twice as likely…\n","protected":false},"author":2,"featured_media":351319,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[163,85,46],"class_list":{"0":"post-351318","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-health","8":"tag-health","9":"tag-il","10":"tag-israel"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/351318","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/comments?post=351318"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/351318\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media\/351319"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media?parent=351318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/categories?post=351318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/tags?post=351318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}