We Tested Think Fast on the Brain. The Results Are Hard to Ignore.

A clinically validated brain-performance test took our Lion's Mane coffee out of the marketing pitch and into the lab. Faster reactions. Sharper attention. Significantly stronger mental stamina. Here is what actually happened.

Most functional coffee makes a promise.

More focus. More clarity. More productivity. More "brain power."

The problem? Most of the time, you are left guessing. You drink it. You wait. Maybe you feel something. Maybe you do not. Maybe it is just caffeine doing caffeine things.

At First Person, guessing was never the goal.

Think Fast was designed to be different from the beginning: premium Costa Rican freeze-dried coffee combined with our proprietary Crystallized Lion's Mane technology, created to deliver a cleaner, faster, more noticeable cognitive lift without compromising taste, texture, or ritual.

So we put it to the test.

Think Fast was evaluated at Peak Brain Institute using two forms of brain performance testing: quantitative EEG brain mapping (qEEG) and the IVA-2 Continuous Performance Test — an FDA-cleared, clinically used assessment of attention, response control, reaction time, and cognitive stamina.

The results came from a single-subject before-and-after test, so this is not a clinical trial and should not be treated like one. But the data was clear, measurable, and extremely interesting.

The Headline Numbers

Before we walk through the science, here is what changed in roughly 90 minutes:

First, the Brain Got Faster

The qEEG analysis focused on a measure called alpha peak frequency, or APF.

Think of alpha peak frequency as one marker of the brain's operating speed. In cognitive neuroscience, higher APF has been associated with faster information processing, stronger attention, working memory, and fluid cognitive performance.

Before Think Fast, the subject's average alpha peak frequency across 19 measured brain regions was 9.65 Hz. Immediately after finishing one cup, it climbed to 9.87 Hz — a +0.21 Hz increase, or a 2.2% lift. One hour later, it was still elevated at +0.14 Hz above baseline.

To a casual reader, 0.21 Hz might sound small. In EEG terms, it is not.

Published research on plain caffeine typically shows alpha peak frequency increases in the range of roughly +0.05 to +0.15 Hz. Caffeine plus L-theanine, one of the most-studied nootropic coffee-style combinations, tends to fall around +0.10 to +0.20 Hz. Think Fast's +0.21 Hz sits at or beyond the top of that range.

In plain English: this was not just "coffee made the subject feel more awake." The brain's electrical activity shifted in a direction associated with faster cognitive processing.

The Biggest Changes Happened Where Cognitive Work Actually Happens

The most interesting part of the qEEG data was not just that alpha peak frequency increased. It was where the largest increases occurred.

The biggest jump appeared in the left frontal region (F7) — the part of the brain associated with language, verbal working memory, executive control, and goal-directed behavior. That region showed a +0.43 Hz increase after Think Fast.

Other major gains appeared in regions associated with verbal memory, attention, executive planning, visual-spatial memory, and pattern recognition.

That pattern matters. A generic stimulant effect is usually more diffuse — you might see arousal, energy, or activation, but not necessarily a clean signal concentrated in regions tied to higher-order cognition.

Think Fast's largest shifts appeared in the brain regions responsible for the things people actually want from a cognitive performance product: sharper focus, faster thinking, better recall, clearer communication, and stronger task control.

Attention, Response Control, and Reaction Time All Improved

The second test looked at performance, not just brain activity.

The IVA-2 Continuous Performance Test measures how well someone pays attention, responds accurately, controls impulses, and maintains performance over time. Before Think Fast, the subject completed a baseline IVA-2 test. After drinking Think Fast, the subject repeated the test roughly 90 minutes later.

Scores are reported as Quotients — standardized the same way IQ is scored (mean 100, one standard deviation = 15 points). A +20-point Quotient jump is a clinically large effect.

The biggest standouts:

• Full-Scale Attention rose 25.6% (Average → High Average).
• Full-Scale Response Control rose 40.0% (Low Average → High Average).
• Auditory Response Control rose 44.3% (Low Average → Superior).

That last point matters. Speed without control is not performance — it is just stimulation. A better brain-performance profile is faster and more accurate. More alert and more controlled. More responsive without becoming sloppy.

Reaction Time: Faster Across Every Measure

Reaction time improved across both visual and auditory tasks. After Think Fast:

To put a 131-millisecond visual speed-up in human terms: that is roughly the difference between catching and missing a fastball at the plate, or between a driver braking in time and not.

That is the kind of improvement that can matter in real life. Not because your morning coffee needs to turn you into a fighter pilot — but because daily performance is built on small moments of speed, accuracy, and control:

• Catching the mistake before it goes out.
• Finding the word faster.
• Staying with the conversation.
• Switching tasks without losing the thread.
• Reacting sooner. Thinking cleaner.

The Biggest Surprise: Mental Stamina

One of the strongest findings was cognitive stamina — how well the brain maintains performance during the back half of a demanding task, when fatigue, boredom, and distraction normally take over.

That is not an abstract lab metric. That is daily life. The second half of the meeting. The final hour of deep work. The point in the afternoon when your brain starts quietly looking for the exit.

Auditory Stamina jumped +78.9% (Below Average → Very Superior). Visual Stamina rose +50.0% (Low Average → Superior).

This may be the most practical finding in the entire test. Because cognitive performance is not just about how sharp you are for five minutes. It is about whether your brain can stay online when the work gets long, repetitive, or mentally expensive.

How This Compares to Caffeine Alone

Caffeine is one of the most-studied compounds on earth. We pulled comparison ranges from peer-reviewed meta-analyses on caffeine and continuous performance tasks, plus controlled studies of the most common nootropic-coffee combination, caffeine + L-theanine.

Across every category, Think Fast's results equaled or exceeded published benchmarks for caffeine alone, and met or beat the published range for caffeine + L-theanine — especially on response control, sustained attention, and stamina, where gains were roughly two to four times larger than what plain caffeine typically produces.

Not Just More Stimulation

One of the more interesting qEEG findings was what did not happen.

The report noted that Think Fast did not appear to push the brain into an overstimulated or dysregulated pattern. Relative theta, alpha, and alpha-to-beta activity remained largely within normal range, while beta and high-beta patterns showed signs of cooling over time in frontal and central regions.

That matters, because caffeine can sometimes produce the wrong kind of energy. Fast, but scattered. Awake, but anxious. Driven, but twitchy.

Think Fast did show some stimulant-like side signals in the IVA-2 report — including increased fine-motor hyperactivity and impulsive-event counts. That is worth acknowledging honestly: this is still a caffeinated product.

But the overall pattern was more interesting than a simple caffeine spike: faster reaction time, better attention, stronger response control, improved stamina, and qEEG changes in regions tied to higher-order cognition.

That is the difference between "more awake" and "more capable."

What This Could Mean for Daily Brain Performance

The real promise of Think Fast is not about becoming someone else. It is about getting more access to the brain you already have.

Based on this single-subject test, Think Fast may support the kinds of cognitive functions people rely on every day:

• Sharper attention when the day starts moving fast.
• Faster processing when information is coming from every direction.
• Better response control when accuracy matters.
• Stronger stamina when focus has to last longer than motivation.
• More mental clarity without the usual functional coffee trade-offs.

That is why this testing matters. "Brain performance" should not be a vague wellness phrase. It should be observable. Measurable. Felt in the way your brain shows up for the work, decisions, conversations, and demands of the day.

Frequently Asked Questions

This Is What We Mean by Think Fast

Most coffee gives you caffeine. Most functional coffee gives you a compromise. Think Fast was built for something better: a premium coffee ritual powered by Crystallized Lion's Mane technology, designed to deliver a fast, clean cognitive lift you can actually feel.

In this first round of brain testing, Think Fast did more than wake up the subject.

• It changed measurable markers of brain activity.
• It improved attention.
• It improved response control.
• It made reaction time faster.
• It supported mental stamina under load.

And it did all of that while preserving the thing most functional coffee forgot about: the coffee experience itself.

Because better brain performance should not taste like a punishment. It should taste like coffee. And it should help your brain show up like it means it.