Published April 10, 2026 11:51AM<\/p>\n<\/div>\n
Whether you\u2019re hiking from dawn to dusk, tackling a challenging mountaineering expedition, or living off the grid deep in the backcountry, your body and mind are constantly pushed to their limits. Fatigue sets in, sleep becomes scarce, and both physical and mental performance begin to decline. It\u2019s in these harsh, high-stakes environments that your body\u2019s reserves of energy and focus are depleted. In conditions like those, you\u2019ll want to be as alert as possible.<\/p>\n
Can a supplement\u2014specifically creatine monohydrate, which is popular because it\u2019s widely accessible, budget-friendly, and has a high bioavailability<\/a> (meaning that it can be easily absorbed in and used by the body)\u2014help you stay mentally sharp when you\u2019re running on empty? The answer may be yes. Here\u2019s what you should know.<\/p>\n While creatine is traditionally known for its role in enhancing<\/a> muscle strength and recovery, there\u2019s some evidence suggesting it may help your brain function better, especially under stress and fatigue. Creatine\u2019s main function<\/a> is to regenerate adenosine triphosphate (ATP), a molecule in the body that supplies and stores energy.<\/p>\n Roberto Cannataro, a chemical engineer and sports nutritionist, explains, \u201cATP is the vehicle of energy into cells, and the first and fastest way to restore ATP is creatine; every [bit of] energy needed in the first five to ten seconds [of intense physical activity or exercise] is covered by creatine.\u201d This is especially important for the brain, which operates at high speeds. Cannataro adds, \u201cNeuronal connections often occur in less than a tenth of a second, so having a rapid energy source like creatine can help the brain respond faster under stress.\u201d<\/p>\n This means that when your body\u2019s energy stash is low\u2014whether from lack of sleep, physical exhaustion, or environmental factors\u2014creatine could provide the boost your brain needs to continue performing complex mental tasks needed when traversing the outdoors, such as decision-making, navigation, or problem-solving.<\/p>\n A 2025 review<\/a> on the benefits of creatine supplementation in adults over 55 reported that creatine improved memory, processing speed, and attention. A study<\/a> published in Scientific Reports<\/em> in 2024 suggests that creatine can also help alleviate tiredness. In extreme environments, this may offer a key advantage for those who need to stay vigilant under pressure. A recent small study<\/a> examining how creatine supplementation affects typical brain processes in sleep-deprived people found that creatine may boost mental performance and reduce sleepiness even under stress. The researchers stated, \u201cIt can be concluded that creatine has the potential to be used in prolonged cognitive activity during sleep deprivation.\u201d<\/p>\n Despite promising results, the jury is still out on just how impactful creatine is on the brain. A 2023 study about creatine\u2019s impact on cognition<\/a> examined 123 participants who took five grams of creatine monohydrate per day for six weeks. The study aimed to assess the effects of creatine supplementation on memory and reasoning ability. Julia Fabien Sandk\u00fchler, the lead author of the 2023 study, says, \u201cWe are still very unsure if creatine helps with brain function in everyday settings, much less in extreme environments like sleep deprivation or altitude.\u201d She notes that while there were slight improvements in working memory, it\u2019s not yet clear whether these effects would translate to more complex mental demands, especially in high-stress or high-altitude environments.<\/p>\n Andrew Murray, a professor of metabolic physiology at the University of Cambridge, has studied how creatine affects energy metabolism, particularly in high-altitude environments.<\/p>\n \u201cCreatine helps replenish ATP in cells,\u201d he says, \u201cbut there are mixed reports on its beneficial effect on cognitive function. Some studies report mild improvements, but others show no effect.\u201d He also points out that, at high altitudes, where oxygen availability is limited and energy metabolism becomes more strained, it remains unclear whether creatine supplementation offers significant benefits.<\/p>\n Cannataro, however, is more optimistic about creatine\u2019s potential in extreme environments. \u201cAltitude is characterized by a lesser oxygen amount in the air, so anaerobic glycolysis<\/a> (a process that produces ATP in the body when oxygen is low in the body)\u2014or better, creatine\u2014could be the most important supply, giving a more prolonged energy source,\u201d he says. This means that in situations where oxygen is scarce, such as at high altitudes, creatine might help provide the energy necessary to support both physical and mental performance.<\/p>\n While more research is needed to fully understand creatine\u2019s cognitive benefits, its role in ATP regeneration makes it a promising supplement for maintaining mental clarity in demanding conditions. Creatine may also have the potential to play an important role in combating age-related cognitive decline, Cannataro says.<\/p>\n Regarding dosage, taking between three and five grams of creatine per day is considered safe, according to Harvard Health<\/a>. However, there are two things to keep in mind. The first is that people with kidney disease should check with their doctor before taking creatine, as some studies suggest it can affect renal function<\/a>. Second, when you first start taking creatine, you might retain some fluid initially until your body adjusts. That water retention may last for about one week.<\/p>\n Whether you\u2019re tackling physical exhaustion, a lack of sleep, or mental fatigue, creatine\u2019s ability to quickly replenish ATP may offer a vital mental edge.<\/p>\n Want more\u00a0<\/b>Outside<\/i><\/b>\u00a0health stories?\u00a0<\/b>Sign up for the Bodywork newsletter<\/b><\/a>.<\/b><\/p>\n <\/div>\nHow Creatine May Help You Think More Clearly and Stay Alert<\/h2>\n
Can Creatine Improve Brain Power When the Body Is Under Extreme Conditions?<\/h2>\n
Creatine May Be Good for the Brain During Big Climbing Expeditions or Hikes<\/h3>\n
What Does This Mean for You?<\/h2>\n