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Peanuts

Chapter 3 - Nutrition & Energy Systems

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Flexed Biceps

Chapter 1 - Musculoskeletal Anatomy

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Woman Lifting Weights

Chapter 2 - Cardio - Respiratory Exercise Physiology

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Chart Increasing

Chapter 4 - Movement Analysis

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Trophy

Chapter 5 - Skill In Sport

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Bar-Chart

Chapter 6 - Measurement & Evaluation Of Human Performance

Chapter 7 - Training To Optimize Physiological Performance

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Globe Showing Europe Africa

Chapter 8 - Environmental Factors & Performance

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Pill

Chapter 9 - Non-Nutritional Ergogenic Aids

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Chapter 10 - Individual Differences In Sport

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Fire

Chapter 11 - Motivation In Sport & Exercise

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Grimacing Face

Chapter 12 - Arousal, Anxiety & Performance

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Brain

Chapter 13 - Psychological Skills Training

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Downcast Face with Sweat

Chapter 14 - Overtraining, Stress & Burnout In Adolescent Athletes

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Stethoscope

Chapter 15 - Physical Activity & Health

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Red Apple

Chapter 16 - Nutrition For Sport & Exercise

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Chart Decreasing

Chapter 17 - Internal Assessment & Practical Work

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Writing Hand

Chapter 18 - Perparing for your exams 

<ul>
	<li>Not ALL energy in food is for us. Imagine trying to power your computer with a banana... some energy just won&rsquo;t work! 🍌💻</li>
	<li>Some parts, like fiber, can&#39;t be digested. Think of it like trying to use Lego bricks in a Jenga game &ndash; it just doesn&rsquo;t fit! This energy exits our body through poop. 💩</li>
	<li>Sometimes, even digestible nutrients have parts that contain energy but leave our body. Like when protein turns into urea and ammonia - it&#39;s like half-eaten candy! They exit through our pee. 🍭💦</li>
	<li>What really matters is metabolizable energy - the energy that our body can actually use.</li>
</ul>

<ul>
	<li>Carbohydrates, fat, and proteins = our energy providers.</li>
	<li>Fat can be stored easily (like keeping extra batteries) and is used up slowly.</li>
	<li>Proteins can&#39;t be stored, so they&#39;re used up fast (like that one-time-use emergency phone charger).</li>
	<li>After a balanced meal, our body uses:
	<ul>
		<li>Proteins 🥩</li>
		<li>Carbohydrates 🍞</li>
		<li>Fat 🥓</li>
	</ul>
	</li>
</ul>

<ul>
	<li>Think of metabolism as your body&#39;s way of sorting Lego pieces: building things or breaking them down!</li>
	<li>Anabolism: Building phase. Smaller blocks (like glucose) are turned into big structures (like glycogen). Imagine turning many little Lego pieces into a massive spaceship!</li>
	<li>Catabolism: Breaking down phase. Large molecules become smaller ones. It&#39;s like dismantling that Lego spaceship when you need the pieces for something else. There are two types:
	<ul>
		<li>Aerobic (needs oxygen, like a fish needs water)</li>
		<li>Anaerobic (doesn&#39;t rely on oxygen, like a cactus doesn&#39;t need much water)</li>
	</ul>
	</li>
</ul>

<ul>
	<li>Carbs are broken down to simple sugars: glucose, fructose, and galactose. It&#39;s like breaking a chocolate bar into individual pieces.</li>
	<li>These sugars travel to the liver. Here, fructose and galactose are like undercover agents, changing their identity to glucose. 🕵️</li>
	<li>Glycolysis: A fancy term for breaking down glucose. Think of it as your sugar factory where glucose gets processed.
	<ul>
		<li>It&#39;s run by bosses named hexokinase, phosphofructokinase, and pyruvate kinase.</li>
		<li>Result: Energy (ATP) + pyruvate.</li>
		<li>If there&#39;s enough oxygen, pyruvate is further processed. But if not (like during an intense dance-off), it turns into lactate. 💃</li>
	</ul>
	</li>
	<li>Glycogenesis: When there&#39;s too much glucose, our body stores it as glycogen, just like storing extra candy for later. 🍫</li>
	<li>Glycogenolysis: When we need energy and there&rsquo;s no immediate sugar available, the stored candy (glycogen) is unpacked for use! However, muscle glycogen is like a private candy stash just for muscles, while liver glycogen is shared with everyone.</li>
</ul>

Remember, your body is a finely-tuned machine. It knows when to store, when to use, and when to break down energy! So the next time you munch on a candy bar, think about the sweet journey it takes inside you! 🍭🚀🌌

Unlocking The Secrets Of Human Metabolism: What You Didn't Know

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Standard Level

Sports, Exercise & Health Science SL

Chapter 3 - Nutrition & Energy Systems

Unlocking The Secrets Of Human Metabolism: What You Didn't Know

Table of content

Energy in food 🍔🍎

Macronutrients & energy 🔋

Unlock the Full Content!

Chapter 3 - Nutrition & Energy Systems

Unlocking The Secrets Of Human Metabolism: What You Didn't Know

Table of content

Energy in food 🍔🍎

Macronutrients & energy 🔋

Unlock the Full Content!