Interesting "facts"

I got this list as an e-mail forward, so it must be all true:

-Scientists say the higher your I.Q. The more you dream.
>
>
> -The largest cell in the human body is the female egg and the smallest is
> the male sperm.
>
> -You use 200 muscles to take one step.
>
> -The average woman is 5 inches shorter than the average man.
>
> -Your big toes have two bones each while the rest have three.
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> -A pair of human feet contains 250,000 sweat glands.
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> -A full bladder is roughly the size of a soft ball.
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> -The acid in your stomach is strong enough to dissolve razor blades.
>
> -The human brain cell can hold 5 times as much information as the
> Encyclopedia Britannica.
>
> -It takes the food seven seconds to get from your mouth to your stomach.
>
> -The average human dream lasts 2-3 seconds.
>
> -At the moment of conception, you spent about half an hour as a single
> cell.
>
> -There is about one trillion bacteria on each of your feet.
>
> -Your body gives off enough heat in 30 minutes to bring half a gallon of
> water to a boil.
>
> -The enamel in your teeth is the hardest substance in your body.
>
> -Your teeth start growing 6 months before you are born
>
> -When you are looking at someone you love, your pupils dilate, and they do
> the same when you are looking at someone you hate.
>
> -Your thumb is the same length of your nose.
>
> At this very moment I know full well you are putting this last fact to the
> test...now remove your thumb from your nose and pass this on to the
> friends you think might be interested in comparing their thumbs to their
> noses as well! :-)