Core Points - The article emphasizes the importance of potassium in the body and the risks associated with low potassium levels, especially during hot weather and excessive sweating [3][4][5] - It highlights that simply drinking water after sweating may not be sufficient to replenish lost electrolytes, particularly potassium [5][6] Group 1: Importance of Potassium - Potassium is essential for maintaining cellular function, muscle contraction, and heart health, with normal blood potassium levels ranging from 3.5 to 5.5 mmol/L [3][4] - Low potassium levels can lead to serious health issues, including muscle weakness, heart rhythm disturbances, and in severe cases, life-threatening conditions [4][6] Group 2: Causes and Risks of Low Potassium - Excessive sweating, especially in high-temperature environments or during prolonged physical activity, can lead to significant potassium loss [4][5] - High-risk groups for low potassium include the elderly, children, and individuals with chronic illnesses or those taking diuretics [6][7] Group 3: Prevention Strategies - To prevent low potassium levels, it is crucial to consume electrolyte-rich beverages and potassium-rich foods such as bananas, oranges, and spinach, especially after sweating [5][7] - Monitoring for early signs of low potassium, such as fatigue and muscle cramps, is important for timely medical intervention [6][7]