at least an hour if not more but dont eat greasy foods before the game. eat like a salad or something that gives u energy but not anything big. and the night before a game try to eat noodles. they give u energy for the game
ideally two hours before a game, eating pasta and potatoes will boost your carbohydrate levels to give you more energy.
Yes they should be trained before a game
A send off should be signaled by showing a red card to the player.
they should have a bottle of water or juice
Spaghetti, water, or gaterade. something with a lot of electrolytes
It depends on the type of aggression. If the player is putting other players at risk of injury then the referee should give the aggressive player a warning or a red card. Soccer is an aggressive game, if the player isn't breaking any rules then you should also be more aggressive.
No. Once a player is substituted for, they may not reenter.
Only if he scores a hat trick.