What the AI found
“Your stomach discomfort scores average 2.5 points higher on days when you consume coffee before any solid food, compared to days coffee follows breakfast.”
Before
Haphazard morning routine, vague symptoms
After
Informed morning choices, clearer gut data
The same system, three states — real screens, not a screenshot
| Date | Symptom Score |
| Mon, Oct 23 | 4 (bloating) |
| Tue, Oct 24 | 2 |
| Wed, Oct 25 | 5 (gas, discomfort) |
Prompt
Here is my digestive symptom score (1-5, 5 being most discomfort) for the last 7 days, alongside notes on my morning routine (coffee before food, or coffee after food). Please analyse if there's a correlation between coffee timing and symptom score. Day 1: Coffee Before, Score 4 Day 2: Coffee After, Score 2 Day 3: Coffee Before, Score 5 Day 4: Coffee After, Score 2 Day 5: Coffee Before, Score 4 Day 6: Coffee After, Score 1 Day 7: Coffee Before, Score 5
Here is my digestive symptom score (1-5, 5 being most discomfort) for the last 7 days, alongside notes on my morning routine (coffee before food, or coffee after food). Please analyse if there's a correlation between coffee timing and symptom score. Day 1: Coffee Before, Score 4 Day 2: Coffee After, Score 2 Day 3: Coffee Before, Score 5 Day 4: Coffee After, Score 2 Day 5: Coffee Before, Score 4 Day 6: Coffee After, Score 1 Day 7: Coffee Before, Score 5
AI
Analyzing your data, days with 'Coffee Before' food show an average symptom score of 4.5. Days with 'Coffee After' food show an average symptom score of 1.75. This is a difference of 2.75 points, suggesting a marked correlation between consuming coffee before food and higher reported stomach discomfort.4.5
Avg. Score (Coffee Before)
1.8
Avg. Score (Coffee After)
2.7 points
Difference
One Small Shift, Clearer Gut Signals
A daily data habit illuminates the surprising link between morning routine and digestive comfort.
A 38-year-old marketing consultant in Northern Europe, managing irritable bowel symptoms.
Tools used
The real tools used here — swap any for your own equivalent. Each links to how we’d set it up.
Starting state
Before anything was set up
Our subject, a marketing consultant, tracked diet and symptoms reactively, often when discomfort was already present. Data was scattered across notes apps and mental recollections, making it difficult to pinpoint triggers or consistent patterns. There was a general sense that coffee might be an issue, but no clear evidence or actionable insight.
| Date | Symptom Score |
| Mon, Oct 23 | 4 (bloating) |
| Tue, Oct 24 | 2 |
| Wed, Oct 25 | 5 (gas, discomfort) |
| Thu, Oct 26 | 3 |
| Fri, Oct 27 | 4 (acid reflux) |
Working state
Hacks Pass, doing its job
Entering a consistent week of data on her morning activities, she used a spreadsheet to log observations. She then prompted Gemini to cross-reference her daily coffee timing against her self-reported stomach comfort scores, looking for correlations. The AI’s output provided the objective, quantified insight she needed.
Prompt
Here is my digestive symptom score (1-5, 5 being most discomfort) for the last 7 days, alongside notes on my morning routine (coffee before food, or coffee after food). Please analyse if there's a correlation between coffee timing and symptom score. Day 1: Coffee Before, Score 4 Day 2: Coffee After, Score 2 Day 3: Coffee Before, Score 5 Day 4: Coffee After, Score 2 Day 5: Coffee Before, Score 4 Day 6: Coffee After, Score 1 Day 7: Coffee Before, Score 5
Here is my digestive symptom score (1-5, 5 being most discomfort) for the last 7 days, alongside notes on my morning routine (coffee before food, or coffee after food). Please analyse if there's a correlation between coffee timing and symptom score. Day 1: Coffee Before, Score 4 Day 2: Coffee After, Score 2 Day 3: Coffee Before, Score 5 Day 4: Coffee After, Score 2 Day 5: Coffee Before, Score 4 Day 6: Coffee After, Score 1 Day 7: Coffee Before, Score 5
AI
Analyzing your data, days with 'Coffee Before' food show an average symptom score of 4.5. Days with 'Coffee After' food show an average symptom score of 1.75. This is a difference of 2.75 points, suggesting a marked correlation between consuming coffee before food and higher reported stomach discomfort.Use case implemented
The finished system, running on its own
With the pattern identified, she's implemented a small, sustained change: coffee after breakfast. She continues to log discomfort scores, finding a more predictable baseline and clearer understanding of her body's responses. This shift moved her from guessing to knowing, with no restrictive dietary changes required.
4.5
Avg. Score (Coffee Before)
1.8
Avg. Score (Coffee After)
2.7 points
Difference
What an outside observer would notice
2.7 points
Daily Discomfort Score Reduction
30+
Days of Proactive Logging
The stack — build it yourself
Accessible, easy to structure simple daily logs, and widely used for personal tracking.
Its ability to quickly process structured notes and identify quantitative correlations is ideal for preliminary insights.
These are the tools used in this story. Any can be swapped for an equivalent you already trust.
Go deeper
Do this yourself
See Hacks Pass
This story runs on Hacks Pass. The tools and prompts above are the real build — swap any tool for your own equivalent and follow the same steps.