What does heart exhaustion result from?

Heart exhaustion results from the loss of salt and water due to excessive sweating. When an individual engages in prolonged physical activity, especially in hot and humid environments, the body responds by sweating to cool itself down. This sweating results in the loss of fluids and electrolytes, primarily sodium. If these fluids and salts are not adequately replenished, it can lead to an imbalance in the body, causing symptoms such as fatigue, weakness, dizziness, and potentially more serious conditions like heat exhaustion or heat stroke.

Understanding this mechanism is crucial for lifeguards and others involved in aquatic settings or physical fitness, as it highlights the importance of maintaining proper hydration and balancing electrolyte levels during intense or extended activities. This knowledge can help in recognizing early signs of distress in swimmers or athletes and ensure timely assistance.