Science-backed articles on reaction time, memory, IQ, focus, and brain health. No fluff — just research, data, and practical takeaways.
How fast should you react at 20, 30, 40, or 60? Full age-by-age breakdown using data from 500,000+ participants.
Sub-200ms? Elite. 250ms? Normal. Here's exactly where you stand and what actually separates fast from slow.