This soaking helps remove the phytic acid that coats the grain. (madeleineshaw.com)
Soaking also removes the phytic acid and released the enzymes needed for better digestion. (poweroffood.com)
Soaking seeds (and nuts) before eating them helps with digestion by removing the phytic acid which can upset the lining of your stomach and prevent proper digestion of nuts and seeds (and thus not being able to absorb all of the crucial nutrients). (laurenkellynutrition.com)