ParrotPalParrotPal Data · short read
Friday vs Saturday: the Saturday rise in food diaries is about twice Friday’s
Key findings
UK ParrotPal members logged about 125 kcal more on a Saturday and about 55 kcal more on a Friday than on their own typical Monday to Thursday, February to August 2026. Source: ParrotPal anonymised food diaries, over 2,000 UK members a day.
Friday night gets the blame, but in our UK members’ food diaries Saturday is the bigger day. Compared with their own Monday to Thursday, the typical member logged about 125 kcal more on a Saturday and about 55 kcal more on a Friday, roughly twice as much.
+125 kcalon a Saturday, against +55 on a Friday
Extra calories logged, by day
vs own Mon–ThuSunday sits between the two, at about 100 kcal more. Monday to Thursday stay within 15 kcal of each member’s own typical weekday of about 1,630 kcal.
In percentage terms the typical Saturday was about 8% above a member’s weekday, and the typical Friday about 4%. 45% of members logged at least 10% more on Saturdays, against 35% on Fridays.
These are patterns in what members logged, which isn’t always everything they ate. They don’t show why the weekend differs.
What this means
Friday gets the reputation, but in food diaries the bigger day is Saturday. A weekly calorie budget that allows for a bigger Saturday is closer to how people really log.
What the research says
In a year-long US trial, adults gained weight over weekends, with more eaten on Saturdays; people cutting calories stopped losing weight at weekends.
Racette SB, Weiss EP, Schechtman KB, et al. (2008). Influence of weekend lifestyle patterns on body weight. Obesity 16(8):1826–30. doi:10.1038/oby.2008.320
In US national survey data (2003–2012), Saturday was the least healthy day of the week, with more calories than on weekdays.
An R. (2016). Weekend-weekday differences in diet among U.S. adults, 2003–2012. Annals of Epidemiology 26(1):57–65. doi:10.1016/j.annepidem.2015.10.010
Research describes other groups of people; our figures are what ParrotPal members logged.
The figures
| Day | Extra kcal logged vs own Monday to Thursday |
|---|---|
| Monday | +5 kcal |
| Tuesday | +10 kcal |
| Wednesday | +15 kcal |
| Thursday | +15 kcal |
| Friday | +55 kcal |
| Saturday | +125 kcal |
| Sunday | +100 kcal |
Method in brief. UK ParrotPal members’ anonymised food diaries, 1 February to 31 August 2026. Each member is compared with their own typical Monday-to-Thursday day; a counted day has 3 or more entries and 800 to 6,000 kcal, and deleted entries don’t count. Each day of the week rests on over 2,000 UK members.
Aggregates only: every group shown has 50 or more members and no share rests on fewer than 10. Patterns in what members logged, not causes. who’s counted · the 50/10 rule · logged isn’t eaten.
Full report: The weekend effect.
Questions people ask
Do people eat more on a Friday or a Saturday?
In UK ParrotPal members’ food diaries, Saturday: about 125 kcal above their own weekdays, against about 55 kcal on a Friday (February to August 2026).
Cite this
Free to use with credit and a link to the source page. The figures and chart are licensed CC BY 4.0.
Credit line
Source: ParrotPal food diary data, parrotpal.com/data/friday-vs-saturday-calories/
Citation
ParrotPal (2026). Friday vs Saturday: the Saturday rise in food diaries is about twice Friday’s. ParrotPal Data. https://parrotpal.com/data/friday-vs-saturday-calories/. Licensed CC BY 4.0.
Embed the chart (an image with the credit link)
<figure><img src="https://parrotpal.com/data/friday-vs-saturday-calories/chart.svg" alt="Extra calories logged, by day: chart by ParrotPal" width="760" style="max-width:100%;height:auto" /><figcaption>Source: <a href="https://parrotpal.com/data/friday-vs-saturday-calories/">ParrotPal food diary data</a> (CC BY 4.0)</figcaption></figure>
Download the chart (SVG) · The figures (CSV)
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Please read. This page reports patterns in anonymised, aggregated app data. It’s general information, not medical or dietary advice.