u/Equivalent_Common318

What have you actually learned from tracking your diet?

I want to start tracking my food but I'm stuck on what to actually log.

Calories + macros + meal times feels like the default, but two days at 2000 calories from different sources clearly feel different. So I'm not sure that's enough.

Some angles I've been thinking about:

• Macros, fiber, added sugar
• Eating window / time of last meal
• Energy and sleep response after meals
• Specific triggers (gluten, dairy, caffeine timing, alcohol)
• CGM, for those who've gone that far

What I'm curious about:

1. What did you start tracking that turned out to matter most? What did you stop tracking because it was just noise?
2. Have you ever found a correlation that actually changed how you eat (vs just confirming what you already knew)?
3. For people who tried calorie counting and stopped: what replaced it?

Solo-built iOS app. Core loop:

• Log whatever you care about (mood, meds, workouts, food — anything)
• Apple Health syncs automatically in the background
• Run a "Lab": set a hypothesis, wait 2 weeks, get a stats-backed report

On-device only. Privacy first.