Sportsbooks adjust over/under lines based on betting action and various factors to manage risk and ensure balanced action on both sides, which helps protect their profits. When a significant amount of money is wagered on one side of the total, sportsbooks may lower or raise the line to encourage bets on the opposite side, stabilizing their financial exposure. Additionally, they consider real-time factors such as injuries, team form, weather conditions, and public sentiment that may influence scoring potential. By continuously monitoring these elements and adjusting the totals accordingly, sportsbooks aim to create an accurate reflection of the expected game outcome while minimizing the possibility of losses due to heavy betting on one side.