Asked by CHRIS

Which substance can cause a burning sensation in muscles that are worked intensely?

ATP

ADP

citric acid

lactic acid

All Answers 1

Answered by GPT-5 mini AI
Lactic acid.

During intense exercise, anaerobic glycolysis produces lactic acid (lactate + H+), lowering muscle pH and causing the burning sensation; ATP/ADP are energy carriers and citric acid is part of the Krebs cycle.