"There's a variety of factors in play there
Gut feelings on short-chain fatty acids to regulate respiratory health
Cancer cells rely on glycolysis for energy production, even in the presence of oxygen, rather than oxidative phosphorylation
Glucagon-like peptide-2 protects impaired intestinal mucosal barriers in obstructive jaundice rats
So you often are probably ending your sets in the gym every time almost because it's uncomfortable, because your breathing has changed, maybe you feel a little bit out of breath, because the weight started to feel heavy and your brain's like, okay, that's probably enough
Fatigue can be peripheral (physical) or central (mental), where physical fatigue refers to a reduction in individual capacity to perform physical tasks and mental fatigue refers to a reduction in individual capacity to perform tasks requiring concentration and alertness (Gawron et al