YENRA CAFFEINE OBSERVATION LOG — editable plain-text worksheet
Updated September 11, 2026
Guide: https://yenra.com/caffeine-increases-stress/
Adult organizational aid, not a validated screening test or dosing plan.
Open in a text editor, save a personal copy, and duplicate the daily block.
Record ordinary intake; do not consume extra caffeine to provoke symptoms.
Use product labels where available; mark estimates and unknown amounts.
Significant or persistent symptoms warrant clinical attention without
waiting to complete a diary. Discuss individual limits with a clinician.

DAILY BLOCK
Date:
Each item: time / exact product / volume consumed / caffeine mg if known
          / source of information / estimate or stated amount:
Known caffeine subtotal (mg), with unknown items listed separately:
Symptoms described in plain words / time noticed:
Bedtime / wake time:
Approximate time to fall asleep / noticeable awakenings:
Work stress, illness, alcohol, exercise, travel or schedule changes:
Chosen reduction or earlier timing, if any / date it began:
Other changes that could affect the comparison:
Questions to discuss with a clinician:

Review comparable days for repeated patterns. A diary cannot establish
causation or diagnose the cause of anxiety, palpitations or poor sleep.
If reducing habitual caffeine, FDA advises gradual reduction to reduce
unpleasant withdrawal. General guidance and evidence:
https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much
https://pmc.ncbi.nlm.nih.gov/articles/PMC11985402/