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Gut capacity and plasticity have been examined across multiple species, but are not typically explored in the context of extreme human performance. Here, I estimate the theoretical maximal active consumption rate (ACR) in humans, using 39 years of historical data from the annual Nathan's Famous Hot Dog Eating Contest. Through nonlinear modelling and generalized extreme value analysis, I show that humans are theoretically capable of achieving an ACR of approximately 832 g min−1 fresh matter over 10 min duration. Modelling individual performances across 5 years reveals that maximal ACR significantly increases over time in ‘elite’ competitive eaters, likely owing to training effects. Extreme digestive plasticity suggests that eating competition records are quite biologically impressive, especially in the context of carnivorous species and other human athletic competitions.

Modelling the maximal active consumption rate and its plasticity in humans—perspectives from hot dog eating competitions