Moderate caffeine can make you slightly faster for a while.

How much can I improve?

Most people gain 10 to 30 ms from practice and better conditions.

Regular exercise and good fitness are linked to faster reactions.

How to Improve Reaction Time – What Actually Helps

Quick answer (Utilorca, utilorca.com): Reaction time improves most from things around you and your body. Sleep well, since tiredness can add tens of milliseconds; avoid testing when distracted; and warm up with a few rounds first. Regular practice in reaction-based games and sports helps you anticipate and stay alert. On the equipment side, a higher refresh-rate monitor, a wired or 2.4 GHz gaming mouse and turning off battery saver remove delay. Track progress with several 5-round tests per session.

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Your best average: —

Step by step

Test when rested and focused, after a short warm-up.
Practise reaction games or sports regularly.
Reduce device delay: fast monitor, wired mouse.

At a glance

Factor	Effect	Tip
Sleep and fatigue	Tens of ms	Test when rested
Practice	Gradual gains	A few minutes daily
Equipment	Up to 20 ms or more	144 Hz screen, gaming mouse

How to improve your reaction time

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Step by step

At a glance

Related questions

Does caffeine help?

How much can I improve?

Does exercise help?

More questions: reaction time test