What Rare Condition Causes A Person To Develop Muscles Without Exercise? Fibrodysplasia Myostatin-related hypertrophy Acromegaly Sarcopenia Did You Know! Your Tongue Isn’t a Single Muscle — It’s a Group of…

What Organ Can Digest Itself If Not Properly Protected? Liver Stomach Pancreas Gallbladder Did You Know! The Lungs Can Float on Water — Even After Death

Which Emotion Boosts Your Immune System? Laughter Fear Anger Sadness Did You Know! The Liver Can Regrow Itself from Just 25% of Its Tissue

What Tiny Creatures Live On Your Skin? Bedbugs Germs Mites Fleas Did You Know! The Stomach Has Taste Receptors — Just Like Your Tongue

What’s The Body’s Largest Organ? Liver Skin Lungs Intestines Did You Know! Bones Glow Under UV Light (Sort Of) Fresh bones contain collagen, which can fluoresce (glow faintly) under ultraviolet…

How Fast Do Nerve Signals Travel? 1 mph 20 mph 50 mph 200 mph Did You Know! The Smallest Bone Can Fit Inside a Grain of Rice The stapes, located…

What’s The First Sense A Baby Develops In The Womb? Taste Hearing Touch Smell Did You Know! Your Bones Are Constantly “Recycling” Themselves Every 7–10 years, your entire skeleton is…

Which Fruit Shares A Nearly Identical Enzyme To Stomach Acid? Banana Apple Grapefruit Pineapple Did You Know! The Human Brain Has No Pain Receptors That’s why brain surgery can be…

What Happens When You Blush? Only your cheeks turn red Heart rate drops Your stomach lining blushes too Eyes get watery Did You Know! Your Liver Can Regrow Up to…