Reaction Time Improvement

Simple reaction time reflects sensory processing, decision and motor execution latency, and is exquisitely sensitive to sleep pressure — 17-19 hours awake impairs it comparably to a blood alcohol level of 0.05%. This is why reaction time testing is used in fatigue management for drivers and shift workers. Persistent slowing beyond fatigue can indicate hypothyroidism, B12 deficiency, sleep apnoea, medication effects or neurological disease.

1) Sleep 7-9 hours consistently; nothing else on this list comes close in effect size. 2) Time demanding tasks to your circadian peak, typically late morning and again in the early evening. 3) Caffeine 1-3 mg/kg roughly 45 minutes before performance, with a strategic nap for shift work. 4) Warm up physically — core temperature and arousal both improve motor latency. 5) Train the specific skill; reaction time gains are largely task-specific rather than general. 6) Manage hydration; even 2% dehydration measurably slows responses. 7) Avoid alcohol the night before, which impairs next-day reaction time even without a hangover.

• •Sleep sufficiency and consistency
• •Circadian timing of tasks
• •Strategic caffeine use
• •Physical warm-up
• •Hydration
• •Task-specific practice
• •Alcohol avoidance