▁is ▁produced , ▁males ▁and ▁females ▁tend ▁to ▁recall ▁those ▁changes . ▁ ▁Food ▁consumption ▁ ▁There ▁has ▁been ▁much ▁research ▁on ▁whether ▁e ating ▁prior ▁to ▁a ▁cogn itive ▁recall ▁test ▁can ▁affect ▁cogn itive ▁function ing . ▁One ▁example ▁was ▁a ▁study ▁of ▁the ▁effect ▁of ▁breakfast ▁timing ▁on ▁selected ▁cogn itive ▁functions ▁of ▁elementary ▁school ▁students . ▁Their ▁results ▁found ▁that ▁children ▁who ▁a te ▁breakfast ▁at ▁school ▁scored ▁not ably ▁higher ▁on ▁most ▁of ▁the ▁cogn itive ▁tests ▁than ▁did ▁students ▁who ▁a te ▁breakfast ▁at ▁home ▁and ▁also ▁children ▁who ▁did ▁not ▁eat ▁breakfast ▁at ▁all . ▁ ▁In ▁a ▁study ▁of ▁women ▁experien cing ▁Pre men stru al ▁Sy nd rome , ▁they ▁were ▁either ▁given ▁a ▁place bo ▁be verage ▁or ▁a ▁car bo h yd rate - rich ▁one . ▁The ▁patients ▁were ▁tested ▁at ▁home ; ▁their ▁m ood s , ▁cogn itive ▁performance , ▁and ▁food ▁cra ving ▁were ▁measured ▁before ▁the ▁consumption ▁of ▁the ▁be verage ▁and ▁ 3 0 , ▁ 9 0 , ▁and ▁ 1 8 0 ▁minutes ▁after ▁consumption . ▁The ▁results ▁showed ▁that ▁the ▁car bo h yd rate - rich ▁be verage ▁significantly ▁decre ased ▁self - report ed ▁de pression , ▁anger , ▁confusion , ▁and ▁car bo h yd rate ▁cra ving ▁ 9 0 ▁to ▁ 1 8 0 ▁minutes ▁after ▁consumption . ▁Memory ▁word ▁recognition ▁also ▁improved ▁significantly . ▁ ▁Phys ical ▁activity ▁ ▁Studies ▁have ▁indicated ▁that ▁children ▁who ▁are ▁in