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Biology

Anaerobic Respiration

Quick fact

Anaerobic respiration produces only 2 ATP per glucose molecule, compared to up to 38 ATP in aerobic respiration, yet it can keep muscles working for several minutes when oxygen runs low.

Why this is interesting

You've probably felt the burning in your muscles during a sprint. That burn is a sign your cells are running on an emergency fuel source—one that works without a single breath of oxygen.