In the event of a goal on Turn 3 or 7, after the kickoff there is no opportunity to score a goal before half time/match end. This means that these turns are dead turns. This is a bad play experience as it adds a stage to the game that serves no purpose. Therefore, we have Injury time.
Injury Time: If a goal is scored on the 3rd or 7th turn then an extra turn of injury time is added to the half to allow the opportunity for an additional goal or defence.
This will be displayed as a +1 next to the turn timer, rather than changing the turn total amount (similar to real football).