Why researchers, founders, and knowledge workers are quietly adding creatine to their morning routine
For 30 years it's been filed under "gym supplement." But recent research suggests creatine's most interesting effects may not be below the neck — they're above it.
If you've noticed that your afternoons hit harder than they used to — the 3pm brain fog, the flat energy, the sense that you're operating at 70% instead of 100% — you're not alone.
Most people blame sleep. Or caffeine tolerance. Or "getting older." And yes, those matter. But a growing group of neuroscientists, physicians and performance researchers have been pointing at something much more overlooked: the brain is a metabolically expensive organ, and for most people it's quietly under-fueled.
What's surprising is the supplement they keep coming back to. It's not a new nootropic. It's not an adaptogen. It's one of the most researched compounds in human history — one that, until recently, was almost exclusively associated with dumbbells and protein shakers.
It's creatine. And the research on what it does to the brain has quietly exploded.
Your brain burns enormous amounts of energy — and often runs short
The human brain weighs about 2% of your body weight but uses roughly 20% of your total energy. Every thought, decision and focus-switch runs on the same cellular energy currency (ATP) that powers your muscles.
Creatine's job in the body is to help rapidly regenerate that ATP. In muscles, this is what lets you push out one more rep or one more sprint. In the brain, it appears to do something similar — support energy availability when cognitive demand spikes.
Under stress, sleep deprivation, or heavy mental workload, those energy reserves deplete faster than they refill. That's the biology behind the "mental fatigue" feeling most knowledge workers know intimately.
What the research actually shows
Over the past decade, studies have started looking beyond muscle outcomes. Multiple reviews and trials now suggest daily creatine supplementation may support:
- Working memory — the "mental RAM" you use to hold information while you work with it
- Mental fatigue — how quickly your thinking slows down under load
- Reaction time and processing speed on cognitively demanding tasks
- Resilience to sleep deprivation — effects tend to show up most in tired brains
- Cognitive performance in older adults, where brain creatine levels naturally decline
Not every study lands the same result — no supplement works equally for everyone. But the overall pattern is consistent enough that creatine is now taken seriously in cognitive research, not just in sports science.
"I started taking it for the gym. Within a few weeks the thing I actually noticed was how much sharper I felt on long work days." — MacLir customer
The people paying attention (and why)
The audience for creatine has quietly expanded far beyond lifters. Five groups in particular have been driving the shift:
- Knowledge workers dealing with long screen hours, back-to-back meetings and decision fatigue
- Founders and operators managing high cognitive load under chronic stress
- Parents running on broken sleep who want something more evidence-based than another coffee
- Women 35+, where research on creatine, energy and mental sharpness has expanded rapidly
- Adults 50+ looking to support memory, mood and everyday cognitive function
What unites them: none of them necessarily care about bench press numbers. They care about showing up sharp — in meetings, in work, with their kids, at the end of a long day.
The problem: creatine was packaged for gym bros, not knowledge workers
Here's the awkward truth about creatine. The ingredient works. The product format doesn't — not for most people.
Walk into any supplement shop and the standard option is a big tub of powder, a plastic scoop, and the unspoken expectation that you'll mix it into water out of a shaker bottle before or after training.
That's fine if your life revolves around the gym. It's a different story if your day revolves around meetings, a laptop, a commute and kids. The powder ends up in a cupboard. The shaker ends up in the sink. The habit ends up quietly abandoned.
Creatine doesn't work like caffeine. You don't feel it kick in 20 minutes after taking it. It works by saturating your system over weeks. Which means the difference between people who see real benefits and people who don't is almost never the brand — it's how many days they actually took it.
What changed: a format built for the people who actually need it
MacLir was designed around a simple idea: deliver the clinical dose of creatine in a format that fits the day of someone who doesn't live at the gym.
Two gummies equal 5 g of creatine monohydrate — the same dose the research is built on. No scoops. No shakers. No loading protocol. No chalky water.
Leave the pouch on your desk, on the kitchen counter, in your bag. Take two with your morning coffee or before a meeting. That's it.
- 2 gummies = 5 g creatine monohydrate
- No added sugar, no gelatin, no artificial colours or flavours
- Third-party tested — important in a category where under-dosing has been repeatedly exposed
- 30 full-dose servings per pouch
Who this is actually for
MacLir isn't trying to replace pre-workout. It's built for a different person.
If you work with your brain for a living. If you're in your 30s, 40s or 50s and notice you're not quite as sharp as you used to be. If you've tried adaptogens, nootropics, extra coffee and more water, and you're ready for something that's actually backed by hundreds of studies — creatine might be the most under-rated upgrade available to you.
You don't need a new training plan. You don't need a complicated stack. You need 5 g a day, consistently, for long enough to let it compound. That's what MacLir was built to make effortless.
Try MacLir Creatine Gummies
2 gummies = 5 g creatine. 30 servings per pouch. Clean formula, third-party tested, and built to live on your desk instead of your cupboard.
Shop MacLir →This article does not contain medical advice and is not a substitute for professional guidance. Individual responses to supplements can vary. Always consult your doctor before starting a new supplement, especially if you have any medical conditions or take medication.