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Human Body Facts

Brain & Mind

61 Facts

Heart & Blood

61 Facts

Bones & Muscles

64 Facts

Senses

31 Facts

Sleep

08 Facts

Longevity

36 Facts

Digestion

12 Facts

Skin

06 Facts

Immune System

06 Facts

Lungs & Breathing

11 Facts

Hormones

04 Facts

Eyes & Vision

05 Facts

DNA & Cells

23 Facts

Teeth & Mouth

02 Facts


One blood donation is about a pint
A newborn heart beats much faster than an adult heart
Each resting heartbeat ejects about 70 milliliters
Your aorta is about as wide as your thumb
Vein valves keep blood moving against gravity

Human Body