Dehydration
[dee-hy-dray-shun]
/ˌdiːhaɪˈdreɪʃən/
Noun
The condition resulting from excessive loss of body water, impairing normal physiological functions.
Dehydration occurs when the body loses more fluids than it takes in, impairing physical performance. It reduces blood volume, making the heart work harder and decreasing the body's ability to regulate temperature. For runners, even mild dehydration can lead to fatigue, decreased coordination, and muscle cramps. In severe cases, it can cause heat exhaustion or heat stroke. Hydration strategies, such as drinking water or electrolyte solutions before, during, and after runs, are crucial. Real-world examples include marathon runners collapsing due to inadequate fluid intake. Proper hydration enhances endurance, recovery, and overall performance.