Body language is important for reading other players at the blackjack table, as it reveals emotions and potential strategies. Subtle cues like posture, facial expressions, and gestures can indicate confidence or anxiety about a hand. For instance, a relaxed demeanor may suggest a strong hand, while fidgeting could signal discomfort. Observing these non-verbal signals helps players make more informed decisions, although it’s crucial to consider them alongside betting patterns and overall behavior for accurate interpretation.