How can we set a calmer schedule?

My house with five kids feels like a zoo on the morning before a game. Everyone seems to ahve the pre-game jitters and they seems to feed off of eachother. My older boys are now in HS and it just gets more tense is this part of the pre-battle nerves or maybe I am missing something? If you have a calm house on game day canyou help this mom out/ I am not always mad--butcouyld use some help.