Your watch gives you an HRV number every morning, but the science says single readings mean little. Here's what actually predicts overreaching, and what your device can't tell you.
If training isn't producing the gains you'd expect despite consistent effort, chronic under-fuelling - not lack of discipline - may be the reason. This affects men too, not just women.
Pros report 120-200g of carbs an hour, but the science backing that jump for age-groupers is thinner than the trend suggests. Here's what's proven, what's not, and how to set your own number.
Roughly a third to half of endurance athletes deal with GI distress during racing. Gut training offers a structured, evidence-informed way to build tolerance - here's what the research supports and how to build a protocol safely.