Why Can Scratching An Itch Sometimes Make It Feel Better Temporarily? It cools the skin It increases vitamin production It removes bacteria Mild pain signals briefly interfere with itch signals…

What Surprising Change Can Happen To Your Voice As You Get Older? It can change in pitch It permanently doubles in volume It loses the ability to whisper It stops…

Which Surprising Thing Can Happen To Your Taste When Your Nose Is Congested? Sweet foods always taste salty Food can seem less flavorful You temporarily lose all taste buds Your…

Why Does A Bruise Often Change Color As It Heals? The area stops receiving oxygen The skin changes pigment permanently New bones form beneath the bruise Blood components under the…

Which Of These Can Your Brain Do While You're Asleep? Completely shut down Consolidate memories Stop using energy Turn off all nerve activity Did You Know! Kidney problems can sometimes…

Why Do You Sometimes Get “Goosebumps” When You're Cold? Tiny muscles attached to hair follicles contract Your pores fill with air Your skin produces extra fat Your sweat glands expand…

Where Is Most Of The Body's Serotonin Produced? Heart Gastrointestinal tract Lungs Bones Did You Know! Changes in the skin can occasionally provide clues about problems elsewhere in the body….

What Is One Reason Yawning May Be Contagious? Your lungs detect someone else's breathing Seeing yawning can trigger the behavior Your body senses another person's oxygen level Yawning is caused…

Which Body Structure Continues Changing Throughout Adulthood? Nose Eyeball Skull Kneecap Did You Know! Some skin disorders can follow invisible “lines” across the body. Certain skin conditions can develop along…