Articles
Guides and explainers about weight trends, calorie budgets and fasting — each with its sources.
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Budget-based calorie tracking vs. logging every gram: a lighter way to keep your weight trend on course
Weighing and logging every ingredient is precise but hard to keep up. How LyteFast's spend-vs-budget calories, AI photo scanning and deficit view offer a lighter approach.
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Why you weigh more on Monday: what a 1,421-person smart-scale study found about the weekly weight cycle
A smart-scale study of 1,421 adults found weight rises over the weekend and falls on weekdays, a swing of about 0.35%. What it means for reading your weight trend.
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Holiday Weight Gain: What an NIH Study Actually Measured
Do people really gain five pounds over the holidays? What an NIH study in The New England Journal of Medicine measured, and why the small gain it found tended to stay.
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Already weigh in on a smart scale? Turn the readings into a trend and a forecast
Turn connected-scale weigh-ins into a smoothed weight trend, a %-to-goal gauge and a milestone forecast. How LyteFast syncs with Apple Health and what is free.
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Is Your Fasting Schedule Actually Moving the Trend?
How to see whether a fasting schedule is actually moving your weight: log fasting windows, a calorie budget, and a smoothed weight trend side by side in LyteFast.
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Why Weight Loss Slows: What the 3,500-Calorie Rule Gets Wrong
Why weight loss curves instead of falling in a straight line: what an NIH model published in The Lancet found about the 3,500-calorie rule, plateaus, and weight forecasts.
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LyteFast Plans: What the Subscription and the AI Add-On Include
What LyteFast's subscription includes, what the optional AI Add-On adds, how the 3-day free trial works and how billing and cancelling work through Apple.
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Weigh-In Frequency and the Weight Trend Line: What the Research Actually Shows
What published research says about how often to weigh yourself and why a smoothed weight trend beats any single morning reading — including a 9,768-user smart-scale cohort study.
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Calorie Deficit vs. Calorie Budget: Two Ways to Frame the Same Number
Calorie deficit and calorie budget describe the same math from two angles. See the formula, a worked example, and which framing keeps you consistent.
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Why Your Weight Fluctuates Daily (and What Number Actually Matters)
Why does your weight fluctuate daily? Water, sodium, and hormones move the number 1–3 lb overnight — here's what to track instead of the scale.