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# Breath Test Guide: When & how often?

### How to Get the Most from Your Breath Testing

Breath testing doesn’t have to be complicated. With a few simple habits, you can build a clearer picture of your digestion while keeping the process stress-free. Remember: every test you take is a step toward understanding your gut better.

### Start with a Baseline

It’s helpful to take a breath test first thing in the morning before eating. A pre-food reading gives you a clear “baseline” to compare with later in the day.

💡 *If you notice a high reading before breakfast, it may suggest fermentation from the previous day’s meals is still taking place — and that’s useful information to have.*

### Test After Meals

To see how your digestion changes over time, try testing at regular intervals after meals — for example, 1 hour, 2 hours, and 3 hours post-meal.
This helps highlight when rises are most likely to appear and can bring more clarity to your symptom patterns.

### Keep It Balanced

We recommend a maximum of 10 breath tests in any 24-hour period. Spacing tests out thoughtfully helps your device last longer while still giving you meaningful insights.

👉 Don’t worry if you miss the “perfect” timing for a breath test — just take your next test as soon as you remember. *Every reading adds value to your dataset.*


### Making It Easier with Reminders

To help you stay consistent, the FoodMarble app includes automatic breath test reminders. When you log a meal, you’ll get a Recent Meal reminder about an hour later. You can also set hourly reminders if you’d like more structure — so testing becomes simple and stress-free.

### Key Takeaways
* **Take a baseline breath test** first thing in the morning to compare against later readings.
* **Test hourly after meals** to spot early rises in fermentation levels that may link to specific foods.
* **Keep to a maximum of 10 tests in 24 hours (**except on Challenge days). 
* **Don’t stress about timing**—each reading contributes to your dataset and can reveal useful patterns over time.
* **Use app reminders** to make testing consistent and effortless.