Athletes live and die by fast reactions — the crack of the bat, the starter's gun, a sudden change of direction. This browser test benchmarks how quickly you respond to a signal so you can track and train it.
Click, tap, or press Space when the panel turns green.
Performance on this browser-based reaction task. It does not measure sport-specific skill, fitness or overall athletic ability.
Add short, frequent reaction sessions to your routine and track your median over weeks. Pair it with sport-specific drills for the real transfer.
No. It's a browser task. Athletic performance depends on many physical and skill factors this test doesn't measure.
You can improve performance on reaction tasks with practice; combine it with sport-specific training.
Short daily sessions and a weekly look at your median work well.
ReactionLab is a browser-based reaction performance test. It is not a medical, neurological, or intelligence assessment. Results depend on your hardware, input device, and browser. See our methodology.