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Lactic Acid Is Not Muscles' Foe, It's Fuel

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Gina Kolata
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May 16


Lactic acid is actually a fuel, not a caustic waste product. Muscles make it deliberately, producing it from glucose, and they burn it to obtain energy. The reason trained athletes can perform so hard and so long is because their intense training causes their muscles to adapt so absorb lactate more readily and efficiently.

Related Content

  1. “From Time Magazine to NBC Commentators: Why is everyone still so confused about lactate (and exercise physiology)?,” Matthew L Goodwin,
  2. “Nothing ‘evil' and no ‘conundrum' about muscle lactate production,” Robergs, Experimental Physiology, 2012.
  3. “Biochemistry of exercise-induced metabolic acidosis,” Robergs et al, American Journal of Physiology, 2004.

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