Which of the following substances can indicate exercise-associated hyponatremia?

Exercise-associated hyponatremia (EAH) occurs when there is an unusually low level of sodium in the blood, often as a result of excessive fluid intake during prolonged exercise. One of the symptoms that can indicate this condition is bloating and nausea. When sodium levels drop, the body may not effectively regulate fluid balance, leading to water retention and subsequent bloating. This can create a feeling of fullness and discomfort, which often presents as nausea.

Bloating and nausea can arise as the body struggles with the imbalance of electrolytes, signaling that the individual may be consuming too much water relative to sodium and not fully absorbing or utilizing the electrolytes needed for proper bodily function. This symptom acts as an important warning sign that a person may be experiencing EAH, emphasizing the importance of adjusting fluid and electrolyte intake during endurance activities.