Caffeine & sleep log (14 days)
Vinthony Academy · vinthony.com| Day | Last caffeine time | Type / size | Bedtime | Wake time | Sleep quality 1-5 | Mid-night wakes |
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Pattern you noticed.
Your personal cut-off.
Caffeine & sleep log
Caffeine has a 5-7 hour half-life — much longer in slow metabolisers. This log helps you find your cut-off rather than a generic rule.