Are you aware of the psychological aspect of how bettors choose between over or under? For starters, over/under bets is a type of sports betting where bettors try to predict whether a combined number of score of both teams is over or under a predetermined value. It is observed that beginners tend to bet on the over side. Why? Because over means excitement.
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For me, this depends, for exampl,e new players usually pick "over" because they expect a fun game with lots of points. It's more exciting to cheer for action, and that's how betting sites attract them. But with more experience, people learn to stay calm and think more carefully, choosing based on the teams and game, not just excitement.