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Year Review

What 365 Days of Fasting Data Looks Like (My Year in Review)

One year. 365 days. I have data for 312 of them (the other 53, I was traveling or just didn't track — see my last post about that 43% month).

Here's what 312 days of intermittent fasting looks like when you visualize it.

Total fasting hours: 5,247. That's an average of 16.8 hours per tracked day. Not quite 18:6 every day, but close enough.

Longest fast: 36 hours. The accidental one I wrote about earlier. Still the record.

Shortest "fast": 9 hours. I broke early for my mom's birthday dinner. Zero regrets.

Consistency score: 71%. I hit my 18-hour target 71% of the time. The other 29%, I was between 14-17 hours. I never went below 14 on a day I intended to fast.

Weight change: Started at 74 kg, currently at 66 kg. That's 8 kg down. But more importantly, I've maintained 66-67 kg for the last 3 months. It's stable.

Mood correlation: My mood scores averaged 7.2/10 on days I hit 18+ hours, and 6.1/10 on days I broke early. That's a full point difference. Not huge, but consistent.

Energy correlation: Harder to quantify, but my subjective "energy score" (1-10, logged at 3 PM) was 7.5+ on fasted mornings vs 6.0 on fed mornings. Fasted work sessions are just better for me.

The chart: I made a year-long visualization using the calculator's trend tab. It's 52 weeks of bars. You can see the dips — December holidays, my sister's visit, that terrible work month. You can see the peaks — my first 20-hour fast, the month I hit 90% consistency, the week I felt unstoppable.

What strikes me most: the trend is up and to the right. Not perfectly, not linearly, but unmistakably. 312 days of mostly consistent fasting changed my body, my energy, and my relationship with food.

I'm not "done." I don't have a goal weight anymore. I have a goal lifestyle. And fasting is part of it now. Not a diet, not a phase. Just how I eat.

If you're on day 1, or day 30, or day 100 — keep going. The data gets more interesting the longer you collect it. And one day, you'll have your own year in review.

I'll keep updating this blog. Follow if you want to see what year two looks like. Or don't — but track your own data. It's worth it.

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Track your fasts, analyze metabolism, plan eating windows, and visualize trends — all free, no signup.
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More from Sarah's Journal

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About Sarah

I'm a 32-year-old graphic designer in Austin, Texas. I started fasting in 2023 and turned my experiments into data visualizations. This blog is where I share what actually worked (and what didn't). No fluff, just real numbers.

Read more about me →