Articles
What the research actually says about fueling: iron, energy availability, the cycle. Every number carries its population and instrument. Read in full text, not from the abstract.
- Why Idunia hides the numbers that judge youGentle mode hides the fueling numbers that read like a verdict and turns check-ins qualitative. The practical numbers you use to log and export your data stay.
- The 44% you keep seeing about female athletes has a second number attachedIt comes from a 2025 study that pooled 46 smaller ones, and it's real. The same study put male athletes at 49.4%. I had never seen anyone mention that part.
- Why iron-deficiency estimates for female athletes range from 15% to 57%The range you keep seeing isn't one finding. It's two different groups of women, measured two different ways, welded together. Here's what the numbers actually say.
Get the next one
New writing on fueling for female athletes, every number read in full text.
Email only. Why.