Stell's  Blog

Our mouth produces about one litre of saliva each day.
Our brain is sometimes more active when you’re asleep than when you’re awake.
The average person has 67 different species of bacteria in their belly button.
Babies don’t shed tears until they’re at least one month old
The human heart beats more than three billion times in an average lifespan.
Our left lung is about 10 percent smaller than our right one.
Human teeth are just as strong as shark teeth.
Scientists estimate that the nose can recognise a trillion different scents!
Humans are the only species known to blush.