Caffeine and Focus

Focus Easy 10 days
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Start the Health OS protocol "Caffeine and Focus" (focus-caffeine-timing) and show me today's step.

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Goal

Test how caffeine affects cognitive performance

Hypothesis

Caffeine affects reaction time and subjective focus

Caffeine blocks adenosine receptors, increasing alertness; but the effect depends on timing and tolerance

Expected Effects

  • ↓ reaction_time
  • ↑ focus_score

Phases

1

Baseline

5 days
  • Drink caffeine as usual
  • Log the time of caffeine intake
  • In the evening, rate your focus for the day (1-10)
  • Take a reaction time test (PVT or similar)
2

Controlled Intake

5 days
  • Drink caffeine only in the morning (before 10:00)
  • Log the exact intake time
  • In the evening, rate your focus for the day (1-10)
  • Take a reaction time test

Tracked Metrics

Primary

  • ↓ reaction_time
  • ↑ focus_score

Evaluation

Method: compare_phase_means

Design: baseline (5 days) → intervention (5 days)

Safety

Disclaimers

  • Take the reaction time test at the same time of day
  • Don't change your caffeine dose — only change the timing

Stop Conditions

  • Severe headache from changing your caffeine routine