My 3 yr old is very energetic, intelligent and very social. He never meets a stranger. Ever and just loves to play. Now that he is getting older he tends to get over stimulated in certain situations. I believe he is fine at preschool (I never hear of anything concerning) but at home he will tend to have tantrums. I have noticed that if he eats sugared food with red dye such or anything that has sugar he will have meltdowns. I also noticed if there are a lot of people around he will also tend to get over stimulated. Is this normal behavior? Anyone else have a toddler like this?