Insights
What the research actually says.
Every figure on these pages is attributed to a named study in the same sentence. Including the ones that contradict what everybody repeats.
Which happens more often than you would expect. The 10,000-step target came from a pedometer advert. “Ninety per cent quit the gym in three months” has no source at all. Losing weight quickly does not, on the trial evidence, mean regaining it faster. Where the popular version turns out to be right, these say so too.
One piece is an opinion rather than a report, and carries a label saying so. It has no sources list, because it is argued from experience instead of measured, which is worth knowing before you read it next to the others.
Habits and routine
Why efforts stop, and what the people who kept going had in common.
On the days you don't want to, just do the steps
OpinionThe Sunday I sat downstairs with a coffee intending not to train, and ended the week with six sessions. On the moment you say no, and why it is the same moment in the gym and at dinner.
31 August 2026 · 5 min read
You can go out on Friday
Diners underestimate a restaurant meal by about 175 calories, the error grows with the meal, and eating less afterwards recovers roughly a third of what you thought it would.
29 August 2026 · 5 min read
The morning routine, and what the phone is taking from it
What the research supports about light, walking and protein first thing, and the one part of the morning that quietly disappears when you take the phone in with you.
28 August 2026 · 7 min read
How long does the average diet last?
About three to five weeks. What studies measured about when people stop, why the popular explanations do not hold up, and what the ones who kept going had in common.
27 August 2026 · 10 min read
Calories and eating
What the trials report about deficits, targets and the numbers people set themselves.
I photographed my breakfast, then weighed it
The photo said 600. The photo plus a description said 425. The scales said 514. What the published accuracy studies report, and why the direction of the error matters more than its size.
6 September 2026 · 7 min read
Weigh daily, believe the weekly average
Fat comes off at a few hundred grams a week and everything else the scale weighs moves by more than that overnight. What the weekly rhythm looks like in 4,657 measurements, and which explanations for a bad morning do not hold up.
3 September 2026 · 7 min read
Calories eaten versus calories burnt
Set a 200 calorie deficit, add an hour of walking and an hour of lifting, and the real number is nearer 600. What that costs, and why no device on you can measure it.
2 September 2026 · 13 min read
Week one is the fastest week you will ever have
In the best-controlled study, fifteen days of restriction produced 1.6 kg of weight loss and 0.2 kg of fat. Where the rest goes, and why the slowdown is not what you think.
30 August 2026 · 6 min read
Eating too little to lose weight?
Cutting harder does stop working, but not for the reason everyone says. What the trials report about metabolic adaptation, under-reporting and regain.
26 August 2026 · 8 min read
Movement
Steps, walking, and what activity does and does not do to the arithmetic.
If they get five minutes to smoke, you get five minutes to walk
OpinionTen laps of a small office is 500 steps. On finding the movement already sitting in a working day, what changes when there are children at home, and why the target is 12,500.
4 September 2026 · 8 min read
How many steps a day?
10,000 came from a 1965 pedometer advert, not from medicine. What the research since has found, and why walking often moves the scale less than the arithmetic suggests.
23 August 2026 · 4 min read
App Alternatives
Offline Food Tracking Apps for iPhone: Privacy & Trade-offs
Several iPhone apps support offline food logging and store data on your device by default. This guide compares privacy-focused alternatives that work without internet or account requirements.
26 October 2026 · Fuel8 Editorial
Cronometer Alternatives: Which Nutrition Tracker Fits You?
Six alternatives to Cronometer compared by database size, logging method, privacy controls, and cost. Identify which fits your tracking style, privacy needs, and feature requirements.
23 October 2026 · Fuel8 Editorial
MyFitnessPal Alternatives: 4 Apps Compared (2026)
Four alternatives to MyFitnessPal—Fuel8, Lose It!, MyNetDiary, and Cronometer—compared on food database size, logging efficiency, privacy, offline capability, and tracking philosophy.
15 October 2026 · Fuel8 Editorial
Best App Guides
Free vs Paid Macro Trackers: What’s Worth Paying For?
Free macro trackers handle logging and targets, but paid versions speed up entry with barcode scanning and voice logging and add coach integration.
2 November 2026 · Fuel8 Editorial
Best nutrition tracking apps for nutrition coaches
Nutrition coaches need tools that reduce admin work and keep clients logging consistently. This guide compares all-in-one coaching platforms, clinical EHR systems, and high-speed macro trackers to help you choose the option that fits your coaching model and client needs.
23 October 2026 · Fuel8 Editorial
Best Calorie and Macro Tracker Apps for iPhone
The best calorie and macro tracker for your iPhone depends on what you actually need: privacy, offline use, database size, nutrient detail, or free-tier access.
20 October 2026 · Fuel8 Editorial
Calorie & Macro Fundamentals
Coaching Workflows
Comparison
Which Food Loggers Work Offline on iPhone
Fuel8 is built to log meals, workouts, and progress on your iPhone without requiring an account, internet connection, or cloud syncing.
4 November 2026 · Fuel8 Editorial
MyFitnessPal vs Cronometer: Which App Best Fits Your Goals?
Cronometer excels at micronutrient tracking and appeals to athletes seeking detailed nutrient analysis. MyFitnessPal offers a larger food database and stronger community features for casual logging and social accountability.
23 October 2026 · Fuel8 Editorial
Fuel8 vs Pen and Paper: Which Workout Log Fits You?
New exercisers often skip workout logs, making progressive overload nearly impossible. This guide compares integrated app tracking against pen-and-paper methods for logging strength and cardio workouts.
19 October 2026 · Fuel8 Editorial
Best Nutrition Tracking Apps for Personal Trainers
Choosing a calorie tracker depends on whether you need offline logging, privacy-first design, coach integration, detailed micronutrients, meal planning, or business management tools.
16 October 2026 · Fuel8 Editorial
Fuel8 vs MyFitnessPal: Which Calorie Tracker Fits You?
MyFitnessPal offers cloud-synced tracking across devices with a vast food database, while Fuel8 prioritizes offline iPhone logging without requiring an account. This comparison examines privacy, features, and which philosophy fits different tracking priorities.
14 October 2026 · Fuel8 Editorial
Eating Out & Nutrition Strategy
Stupid Simple Macro Tracker: Stop Overthinking
Macro tracking at restaurants works when you drop perfectionism and log meals in seconds using visual estimates. Consistency over precision produces better long-term results than sporadic perfect entries.
15 October 2026 · Fuel8 Editorial
Macros at Food Trucks: Quick Logging for Mobile Vendors
Food trucks rarely print nutrition facts. Learn to estimate and log macros by asking vendors about ingredients, breaking meals into components, and using voice logging to maintain consistency without sacrificing street food flexibility.
13 October 2026 · Fuel8 Editorial
Macro Tracking Techniques
Food Scales vs Photo Logging vs Estimates: How Accurate Are They?
A kitchen scale, a photo, or your eye will each give you a different calorie count for the same meal, sometimes by more than a hundred calories.
4 November 2026 · Fuel8 Editorial
How to Measure Food Portions for Calorie Tracking
Portion measurement error is the largest source of calorie tracking inaccuracy.
29 October 2026 · Fuel8 Editorial
Barcode Scanning vs. Voice: Which Logs Macros Faster?
Barcode scanning and voice input are the two fastest ways to log macros in Fuel8. This guide walks through each method, shows where they excel and stumble, and explains the real-world accuracy trade-offs that matter when you eat out frequently.
26 October 2026 · Fuel8 Editorial
iPhone App Workflows & Features
Track Calories and Macros With Workouts | Fuel8
Training progress doesn't move in a straight line. Fuel8 logs meals and workouts on your iPhone, then lets you compare nutrition data against performance history to spot patterns worth investigating.
14 October 2026 · Fuel8 Editorial
Apple Watch Calories vs Food Logging: What to Trust
Apple Watch calorie estimates rely on generalized formulas that can't account for individual metabolism or actual exercise intensity. The solution is prioritizing precise food logging over wearable burn estimates.
13 October 2026 · Fuel8
These pages summarise published research, except where marked as opinion, and are not medical or dietary advice. Studies report group averages; individual results vary.