Your tongue has separate zones for sweet, sour, salty and bitter
Generations of schoolchildren coloured in the diagram: sweet at the tip, bitter at the back, sour and salty along the sides. Does your tongue really work that way?
Myth or fact? Reveal
Myth. Every taste can be detected wherever there are taste buds. The map traces back to a 1942 textbook by Edwin Boring, which replotted David Hänig's 1901 measurements so that small differences in sensitivity looked like separate zones.