Health
Body fat
The US Navy method estimates body fat percentage from circumferences taken with an ordinary tape measure. It is not lab-grade, but it is consistent: measured weekly, it tracks your trend beautifully.
How to measure
- Neck: just below the larynx, tape sloping slightly down at the front.
- Waist: at navel height, after a normal exhale, without sucking in.
- Hips (women): at the widest point.
In the app: Tabata Timer by fit.how has these calculators built in, plus an interval timer you can read from across the gym. See the app.
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