Reaction Time
A simple but revealing measure of your nervous system's processing speed and alertness.
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·ms
Median Reaction Time
SlowerAverageFaster
Your 5 Trials
Score Ranges
Elite
< 180ms
Top 5%
Fast
180–230ms
Top 25%
Average
230–340ms
Most adults
Slow
> 340ms
Bottom 25%
What This Measures
Reaction time is a direct measure of neural conduction speed — how fast a signal travels from your eyes through your brain to your hand. Average for healthy adults: 200–300ms.
Consistent slowing (>350ms) can relate to sleep deprivation, fatigue, or cognitive overload.
What Affects It?
| 😴 | Sleep | #1 factor. Even 1 bad night adds ~50ms. |
| ☕ | Caffeine | Boosts speed by 5–15ms within 30 min. |
| 🏃 | Fitness | Aerobic exercise improves CNS speed. |
| 🎯 | Practice | Familiarity with the task lowers RT. |