the.com/lactic acid
the burn is your muscles filing a paperwork complaint, not actually dying.
means a molecule your muscles produce when they generate energy without enough oxygen, long blamed for soreness it mostly does not cause.
from first isolated from sour milk in 1780 by swedish chemist carl wilhelm scheele, hence lactic from lactis, latin for milk.
myth bustedcleared from muscles within an hour, not days later
real culpritdelayed soreness comes from microscopic muscle fiber damage
actually helpfulfuels muscles and brain, does not just poison them
yogurt connectionsame acid that sours milk into yogurt and cheese