Training your digestive system ('gut training') during preparation for long-distance races is essential for consuming fuel without digestive distress, just as physical training is.

noli's read

Scientific literature confirms that the digestive system possesses a certain degree of plasticity, allowing for improved carbohydrate absorption and a reduction in gastrointestinal discomfort through progressive exposure to exertion (meta-analysis, Costa et al., 2017). The concept that the gut adapts to nutrient intake during exercise is widely supported by randomized controlled trials (RCTs) showing an increase in exogenous carbohydrate oxidation. The creator correctly highlights that this process requires time, which is consistent with the progressive training protocols observed in research. It is important to note that while 'gut training' reduces risks, it does not guarantee total immunity against all digestive issues, as external and genetic factors also play a role. The advice is pragmatic and aligns with recommended practices in sports nutrition for endurance events. There is no major exaggeration here, as the tone remains focused on gradual preparation rather than an immediate miracle solution.

the sources

No named source held this one up — that absence is part of the verdict.