Training is very good for the body but actual all-out racing happens at a level of exertion that typically isn't. Your body recovers from it, but at the Ironman

Training is very good for the body but actual all-out racing happens at a level of exertion that typically isn't. Your body recovers from it, but at the Ironman distance it takes longer than people often think. Athletes show elevated muscle damage and inflammation biomarkers up to three weeks after a race. A lot of the fatigue is actually central nervous system fatigue, which gives the brain fog.