What is a potential consequence of inadequate hydration during exercise?

Inadequate hydration during exercise can lead to decreased cardiovascular efficiency. When the body is not properly hydrated, blood volume can decrease, which means the heart has to work harder to pump blood, ultimately reducing its efficiency. This can result in a decrease in aerobic performance, as the muscles may not receive adequate oxygen and nutrients, which are vital for effective function and energy production during physical activity. Furthermore, dehydration can impair thermoregulation, making it harder for the body to cool itself, which further detracts from performance levels. Therefore, maintaining proper hydration is crucial for optimal cardiovascular function and overall athletic performance.