How to improve your reaction time
October 7, 2026 at 09:42
Two different goals get confused here: genuinely reacting faster, and removing the overhead sitting between your reflexes and the score on screen. The second is easier and gets you more milliseconds. Both are covered below — along with what does not work.
Remove the overhead first
1. Use the Space bar rather than the mouse
Key presses generally register slightly sooner than mouse clicks: shorter mechanical travel, and usually a little less overhead reaching the browser. It is worth a few milliseconds for free. Whichever you pick, stay with it — mixing inputs makes your history meaningless.
2. Rest your finger on the button
If your finger hovers above the key, part of your score is the time spent travelling down to it. Rest it lightly in contact with the key or button, with the muscle relaxed but pre-positioned. Never press hard in advance — you will false-start.
3. Close everything else
Background tabs, video calls, downloads and heavy applications all compete for CPU and can delay the browser's rendering and event handling. A quiet machine measures more honestly.
4. Check your display
A 60 Hz screen adds up to 16.7 ms of pure waiting before a change is even shown; a 120 or 144 Hz screen halves or better that. Enable any “game mode” your monitor or TV offers — it disables post-processing that can add substantial latency. A wired mouse or keyboard also beats a wireless one, though the modern gap is small.
Then improve the reaction itself
5. Warm up
Your first few attempts in a session are almost always slower than the ones a minute later. Do five to ten throwaway rounds before you start taking your score seriously.
6. Look at the cap, not at the timer
Fix your gaze on the mushroom itself. Detecting the change in peripheral vision is slower than detecting it in the centre of your visual field, and every glance away from the stimulus costs you a re-focus.
7. Stay relaxed rather than tense
Tensing your arm and shoulder feels like readiness, but a contracted muscle has to release before it can perform the new movement. Loose forearm, light contact with the key, breathing normally.
8. Do not try to predict the delay
The wait is randomised between one and four seconds precisely so it cannot be learned. Counting it out produces occasional lucky fast scores and a lot of false starts, and it stops you actually reacting. Wait passively and let the change trigger you.
9. Sleep properly
Sleep loss is one of the most reliably documented ways to slow reaction time, and it also makes your results erratic by introducing occasional very slow attempts. No amount of technique compensates for a bad night.
10. Mind the caffeine timing
Moderate caffeine tends to help alertness-dependent tasks slightly. Too much adds jitter and false starts, which costs you more than the alertness gains. If you are a habitual drinker, much of the apparent benefit is simply avoiding withdrawal.
11. Practise in short sessions
Improvement from practice is real but front-loaded: most of it arrives in the first few dozen attempts, then flattens. Several short sessions beat one long one, because attention decays and your times drift upward as you tire.
12. Judge yourself on the median, not the record
One outstanding attempt out of fifty is noise. Take ten or more attempts and look at the middle of the range — that is the number that will actually move as you improve, and the one worth tracking week to week.
What does not work
- Mashing the button. False starts discard the round. The test is built so that spamming cannot produce a score.
- Holding the key down. Only the transition counts, so nothing is gained.
- “Reflex training” apps promising dramatic gains. Simple reaction time is largely constrained by physiology. Practice sharpens it to your personal floor; it does not move the floor much.
- Comparing across devices. A phone browser, a laptop trackpad and a gaming desktop produce systematically different numbers. Compare yourself to yourself.
A realistic target
If you are currently around 300 ms, careful setup and a proper warm-up will typically get you into the 230–260 ms range without any change in your actual reflexes. From there, progress gets slow — each further 10 ms is harder than the last, and the floor for a simple visual reaction sits around 100–120 ms for anyone. Details on where those limits come from are on how it works and average reaction times.
