What role does buoyancy play in a lifeguard's ability to rescue someone?

Buoyancy is crucial in a lifeguard's ability to rescue someone because it allows the rescuer to effectively support both themselves and the person in distress during the rescue. When a lifeguard enters the water, their natural buoyancy helps them maintain a position near the surface, which is vital for both their own safety and the safety of the victim. It enables the lifeguard to conserve energy while keeping themselves afloat, thus allowing them to focus on supporting the individual being rescued. Additionally, if the lifeguard is well-trained in using buoyancy, they can more easily maneuver and position the person for a safe exit from the water, ensuring that the rescue is carried out as efficiently as possible. This supportive role is fundamental to successful rescues, as it helps prevent further drowning risk for both the rescuer and the person needing assistance.