Breakfast and performance.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004032:Diet / Q000592:standards*; D005247:Feeding Behavior / Q000502:physiology*; D005260:Female; D005518:Food Preferences; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D011930:Reaction Time; D014202:Tremor / Q000209:etiology