How does fluid intake support evaporation to regulate the body's temperature? ( 5 marks)
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- Adequate fluid intake maintains blood plasma volume for sweat production. This occurs because the body requires sufficient water stores to transport heat from core to skin surface.
- When athletes consume fluids regularly, sweat glands produce moisture continuously on skin. This allows evaporation to occur, which removes heat energy from the body surface.
- For example, a cyclist drinking 200ml every 15 minutes during summer training sustains perspiration rates. As a result, evaporative cooling prevents dangerous core temperature elevation during prolonged effort.
- Insufficient hydration reduces sweat production capacity. Consequently, the body loses its primary cooling mechanism, leading to heat exhaustion or heatstroke risk during physical activity.
- The reason for this is that without adequate fluid replacement, blood volume decreases, limiting the body’s ability to deliver water to sweat glands for effective thermoregulation.
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- Adequate fluid intake maintains blood plasma volume for sweat production. This occurs because the body requires sufficient water stores to transport heat from core to skin surface.
- When athletes consume fluids regularly, sweat glands produce moisture continuously on skin. This allows evaporation to occur, which removes heat energy from the body surface.
- For example, a cyclist drinking 200ml every 15 minutes during summer training sustains perspiration rates. As a result, evaporative cooling prevents dangerous core temperature elevation during prolonged effort.
- Insufficient hydration reduces sweat production capacity. Consequently, the body loses its primary cooling mechanism, leading to heat exhaustion or heatstroke risk during physical activity.
- The reason for this is that without adequate fluid replacement, blood volume decreases, limiting the body’s ability to deliver water to sweat glands for effective thermoregulation.