Misconceptions & Reasoning
📋 What it is
Common myths: “we only use 10% of our brain”, “bigger animals live longer”, “germs are always bad”.
🗣️ Coach says
Biology has sticky myths worth busting. You use ALL of your brain (just not all at once). Bigger doesn’t mean longer-lived (some tiny animals outlive big ones). And germs aren’t all bad — trillions of helpful bacteria keep you healthy. A good scientist checks claims against evidence.
🧠 Memory hook
Bust the myth: all of your brain works, size ≠ lifespan, and many germs help you.
😂 Giggle
What did the mitochondria say at the talent show?
"I'm the powerhouse of this performance!"
😲 Whoa!
The trillions of bacteria in your gut help you digest food and even affect your mood — you couldn’t stay healthy without them.
✅ Quick check: True or false: “All bacteria are harmful and should be destroyed.”
Say your answer out loud first — then reveal.
False — most bacteria are harmless or helpful; your gut bacteria help you digest food and stay healthy.
Only a small fraction of bacteria cause disease; many are essential.
🧪 Try it! (2 minutes)
Find a “fact” about the body you’ve heard and ask: what evidence backs it? Some famous ones are just myths.