You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
If you hold farts in during the day, they'll just come out when you sleep.
16
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
The human sigh acts as a physiological reset button.
23
Held in farts enter your bloodstream and are bad for your body.
26
You see your nose at all times, your brain just chooses to ignore it.
30
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22