Articles / Body metrics
Body metrics
Trend weight, weigh-in hygiene, measurements, and what the scale can and cannot say.
Trend weight vs scale weight: what's the difference?
Scale weight is what the scale said this morning; trend weight is a smoothed line through many mornings. The exact 7-day-half-life formula, with worked numbers.
First principlesBody metrics4 minHow to weigh yourself properly
Weigh yourself at the same time under the same conditions — morning, after the bathroom, before food — then log the number and read the trend, not the day.
Method / guideBody metrics5 minHow often should you weigh yourself?
Daily gives the smoothest trend; once a week is the minimum MacroDiet needs to keep updating expenditure. What each cadence buys you and how gaps are handled.
First principlesBody metrics5 minHow to take body measurements (and compare them over time)
The seven tape sites Zyra Workouts tracks, where the tape goes, how to keep the tension the same, and how the 30- and 90-day comparison is computed.
Method / guideBody metrics5 minWhy the scale doesn't match the mirror
Fat and lean tissue store different amounts of energy per kilogram, so weight can hold still while shape changes. The arithmetic, plus a 30-day tape check.
First principlesBody metrics5 minTraining around your menstrual cycle: what an app can and can't tell you
How Zyra Workouts estimates cycle day and phase from the days you mark, what the planned chart overlay will show, and what it deliberately does not claim.
Method / guideBody metrics5 minBody fat percentage by sight: how visual ranges work
Why MacroDiet asks you to tap the silhouette closest to you, what the nine ranges are, and what the estimate is — and is not — used for in the app.
Method / guideBody metrics6 minWhat to expect from your weight trend in the first 30 days
Week one is noise, weeks two and three settle the estimate, week four brings the first adjustment that counts. The first month of tracking, week by week.
Method / guideOther categories
Zyra is a training and nutrition tracking tool. Nothing on this page is medical advice, a diagnosis, or an individual prescription. The numbers are estimates from published formulas and the apps' own rules — consult a qualified professional for decisions about your health, and a coach for your training.