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INSIDE HUMANITY

The Human Body & Mind

Explore the human body and mind through biology, neuroscience and psychology, with clear boundaries around health and medical interpretation.

Research participant positioned in a combined PET and MRI brain scanner
EDITOR’S PICK

Why Your Brain Rewrites Memories Every Time You Recall Them

Recall reconstructs memory and can open it to updating. Learn what reconsolidation research shows, where the headline goes too far and why memory changes.

Sep 16, 2026 • 6 min readRead the discovery →
LATEST

Latest discoveries

New stories, explanations and research from The Human Body & Mind.

Close view of fingertips wrinkled after prolonged exposure to water
Human Biology

Why Do Fingers Wrinkle in Water?

Fingers and toes wrinkle after prolonged water exposure because the autonomic nervous system signals blood vessels beneath their hairless skin to constrict. The reduced…

Oct 14, 2026 • 3 min read
Toothbrush beside an open tube of white toothpaste on a clean surface
Health Science

Why Does Toothpaste Foam?

Toothpaste foams because many formulas contain surfactants such as sodium lauryl sulfate. Their molecules have a water-attracting end and an oil-attracting end. During brushing…

Oct 13, 2026 • 3 min read
Athlete stretching on the floor after a workout
Human Biology

Why Do Muscles Feel Sore After Exercise?

Delayed-onset muscle soreness, or DOMS, commonly begins hours after unfamiliar or unusually intense exercise and peaks roughly one to three days later. Lengthening contractions…

Oct 6, 2026 • 4 min read
Close-up of goosebumps raised across the skin of a human arm
Human Biology

Why Do We Get Goosebumps?

Goosebumps occur when sympathetic nerves trigger tiny arrector pili muscles attached to hair follicles. The contraction raises each hair and dimples the surrounding skin.…

Oct 6, 2026 • 3 min read
Children riding a spinning playground merry-go-round outdoors
Neuroscience

Why Do We Feel Dizzy After Spinning?

Spinning moves fluid inside the semicircular canals of the inner ear. That fluid bends sensory structures that signal head rotation. When you stop suddenly,…

Oct 6, 2026 • 3 min read
Woman using a tissue while sneezing at Minot Air Force Base
Human Biology

Why Do We Sneeze?

Sneezing is a protective respiratory reflex. Irritation in the nose activates sensory branches of the trigeminal nerve, brainstem circuits organize a deep breath and…

Oct 6, 2026 • 3 min read
Young woman smiling while covering part of her flushed face
Human Biology

Why Do We Blush?

Blushing is involuntary reddening and warming of the face, ears, neck or chest caused by increased blood flow near the skin. Embarrassment, unwanted attention,…

Oct 5, 2026 • 3 min read
Close view of human facial skin in daylight, an area commonly protected from ultraviolet exposure
Human Biology

How Does Sunscreen Protect Your Skin?

Sunscreen uses ultraviolet filters to absorb most incoming UV energy before it reaches vulnerable skin cells; mineral filters also scatter and reflect a smaller…

Oct 4, 2026 • 3 min read
Woman covering her mouth while yawning outdoors
Human Biology

Why Do We Yawn?

Scientists do not yet have one universally accepted explanation for yawning. A yawn is a coordinated reflex involving a deep inhalation, wide jaw opening,…

Oct 1, 2026 • 4 min read
How Taste Receptor Cells Renew Themselves featured reference image
Human Biology

How Taste Receptor Cells Renew Themselves

Taste buds maintain their sensory role while individual cells are replaced. Studies trace the progenitor cells and molecular connections that make this continuing renewal…

Sep 29, 2026 • 3 min read