blood lactate

Definition

A metabolite produced during high-intensity exercise when your body can't supply oxygen fast enough for purely aerobic metabolism. Despite being blamed for muscle burn, it's actually more like a witness at the crime scene than the criminal.

Example Usage

His blood lactate levels spiked to 12 millimoles per liter during the sprint test, confirming he'd gone full anaerobic.

Origin

From exercise physiology research on metabolic byproducts of exercise

Fun Fact

Blood lactate is actually a fuel source that your body can use for energy, making it more friend than foe despite decades of bad press.

Source: Exercise physiology research and metabolic testing protocols

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