The length from your wrist to your elbow is the same as the length of your foot.

And if that wasn't amazing enough, here are some more interesting body ratios:

• When you hold your arms out wide, the distance from fingertip to fingertip is the same as your height.
• Your nose’s length is as big as your ears.
• The width of your mouth is as big as your ear.
• The width of your mouth is also the distance between your pupils.
• The length of your foot is the same as the distance around your fist.
• The distance around your head at your forehead multiplied by three is the same as your height.
• The measurement around your wrist is one half the measurement around your thumb.
• The distance around your wrist is one half the distance around your neck.
• The distance around your neck is one half the distance around your waist.
• The distance around your thumb multiplied by 8 is close to your waist size.
• The distance around your big toe is about one half the distance around your ankle.

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