A compound made of two amino acids naturally found in muscle and brain cells that helps protect cells from damage and fatigue.
From Latin 'carnis' (flesh) with the chemical suffix '-ine'. Named in the early 1900s when the molecule was discovered in meat extracts.
Athletes naturally have higher carnosine levels in their muscles from training, and it's associated with better endurance. Some supplement it hoping to improve performance, though the science is still mixed on whether supplements work!
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