Grow
Right now, your child's body
is building itself.
Their heart beats 100,000 times a day. Their bones are growing while they sleep. Their brain is wiring itself around every experience they have. Understand what's happening inside — and what you can do to nurture it.
Body Systems
11 systems that keep your child growing and thriving
Brain & Mind
86 billion neurons — more stars than in the Milky Way
Heart & Blood
Pumps 2,000 gallons of blood every day — enough to fill a swimming pool in a week
Eyes & Vision
Your child's eyes can distinguish 10 million different colors
Hearing & Sound
Contains the 3 smallest bones in the entire human body
Lungs & Breathing
If flattened, lung surface area equals a tennis court
Nutrition & Gut
30 feet of incredible food processing — longer than a school bus
Skin & Protection
1,000+ nerve endings per square inch — a super-sensor suit
Muscles & Bones
Bone is 5x stronger than steel, gram for gram
Immune System
Remembers every germ it has ever defeated — a lifelong memory bank
Hormones & Growth
Growth hormone is released mainly during deep sleep — sleep literally makes your child taller
Kidneys & Filtering
Each kidney has 1 million tiny filters called nephrons
Developmental Domains
5 key areas that shape who your child becomes
Learning & Cognition
Working memory holds 7±2 items — that's why phone numbers are 7 digits
Language & Speech
Bilingual children have measurably more flexible brains
Emotional Health
Children can identify 30+ distinct emotions by age 5
Motor Skills
Cross-lateral movements (crawling) literally wire the brain halves together
Sensory World
Each child has a unique sensory profile — no two process the world the same way
Now that you understand the body,
learn the six daily habits that shape it.