Athletics & Wellness
Grade 10
45 min
Hydration Station: The Science of Drinking for Performance
Staying hydrated is one of the easiest ways to boost your athletic performance and feel your best every day. This lesson breaks down the science of hydration, helping you understand how to drink for success on and off the field.
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What & Why
Your body is about 60% water! This water isn't just sitting there; it's working hard to keep you at your peak. Proper hydration helps:Regulate Body Temperature: Sweating is your body's air conditioning system. When you're hydrated, it works efficiently to cool you down.Transport Nutrients: Water carries energy (carbohydrates) and other nutrients to your hard-working muscles.Lubricate Joints: It keeps your joints moving smoothly, reducing the risk of injury.Improve Brain Function: Even mild dehydration can affect your focus, reaction time, and decision-making.When you don't have enough water, you become dehydrated. Early signs include thirst, fatigue, headache, and dark-colored urine. You also lose electrolytes (like sodium and potassium) in your sweat, which are crucial for muscle function...
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Example 1 — Pre-Game Prep
Maya has a big soccer game at 3 PM on Saturday. Her hydration plan starts on Friday.The Day Before: Maya sips water consistently throughout the day, not just chugging it at night. She aims for pale yellow urine, a great sign of good hydration.Game Day Morning: She drinks 2-3 glasses of water with her breakfast to start the day hydrated.2-3 Hours Before Kick-off: She drinks another 500ml (about 2 cups) of water. This gives her body time to absorb the fluid and get rid of any excess.Right Before the Game: In the 30 minutes before warm-ups, she sips another 250ml (1 cup). She avoids sugary sodas or energy drinks, which can lead to a crash.
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Example 2 — During-Workout Fuel
Leo is training for a half-marathon and is going for a 90-minute run. It's a warm day.The Problem: A long, intense workout means significant sweat and energy loss. Plain water might not be enough to replace lost electrolytes.The Strategy: Leo carries a sports drink. It contains a mix of water, carbohydrates (for energy), and electrolytes (like sodium and potassium).The Timing: He doesn't wait until he's thirsty. He takes a few big sips every 15-20 minutes. This consistent intake helps him maintain his energy levels and prevent muscle cramps.The Result: By staying on top of his hydration and electrolyte intake, Leo finishes his run feeling strong instead of depleted.
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Beginner
What is the primary role of electrolytes, such as sodium and potassium, for an athlete?
A.To help with muscle contraction and fluid balance.
B.To provide the main source of energy for exercise.
C.To build and repair muscle tissue after a workout.
D.To increase the oxygen-carrying capacity of blood.
Beginner
Jamal feels tired and has a headache after his 90-minute football practice on a hot day. He only drank water. What is the most likely cause?
A.He didn't eat enough protein before practice.
B.He is likely dehydrated and may have lost too many electrolytes.
C.He is probably getting sick with a cold.
D.He didn't stretch properly after practice.
Beginner
What is one of the earliest and most common signs that your body is becoming dehydrated?
A.Feeling thirsty.
B.Muscle cramps.
C.Feeling dizzy.
D.Rapid heartbeat.
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