
PHYSICAL WELLNESS
your body’s protective layer
SKIN
Your skin is the body’s largest organ and first line of defense. It acts like a strong but flexible barrier, keeping harmful things out and essential things in, while also helping regulate temperature and allowing you to feel the world around you.
Protects against germs, chemicals, and physical injury
Prevents excess water loss and keeps fluids balanced
Helps regulate body temperature (through sweat + blood flow)
Produces vitamin D when exposed to sunlight
Allows you to sense touch, pressure, heat, and pain
SKIN BASICS
Common Terms + Simple Definitions
Here’s a mini glossary for skin-related words you’ll see throughout the site:
Epidermis - The thin outer layer of skin (waterproof + protective)
Dermis - The thicker middle layer with blood vessels, nerves, and glands
Hypodermis - The deepest layer, made of fat and connective tissue
Keratin - A protein that makes skin tough and waterproof
Melanin - Pigment that gives skin its color and protects from UV rays
WHAT SKIN WORK WITH
SKIN + OTHER SYSTEMS
Hair & Nails → Together with skin, they form the integumentary system’s protective layer
Sweat Glands → Release sweat to cool the body and remove waste
Blood Vessels → Expand or constrict to help regulate temperature
Nervous System → Sends touch, pressure, and temperature signals to the brain
Immune System → Skin cells provide chemical and physical defense against pathogens
HealthY SKIN…
Healthy skin means strong protection and balanced moisture. Staying hydrated, eating a nutrient-rich diet, getting safe sun exposure, and keeping skin clean and moisturized help it function at its best.