Strange but true? Test yourself in our barely believable science quiz

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Martin O’Neal

*Some questions have multiple correct answers

1 Health benefits of intimacy

A Cuddling increases bone density

B Sex is a nasal decongestant

C Masturbating improves eyesight

2 States of matter

A In condensed matter physics, a “hyperfluid” is a material with zero viscosity, meaning it can flow backwards in time and, when stirred, will spin forever (both forwards and backwards in time)

B In condensed matter physics, a “time crystal” is a state of matter in which the configuration of the component parts shifts in a repeating cycle forever without using any energy

C In condensed matter physics, an “ontological condensate” is an ultracold gas that could reveal the true nature of being, should we ever be able to isolate it

3 Hairy faces

A Beards might have evolved to keep faces warm

B Beards might have evolved to store food in through winter

C Beards might have evolved to soften the blows from punches

4 Animals at play

A Komodo dragons play tug of war

B Crows play blackjack

C Elephants play hide and seek

5 Celestial bodies

A Astronauts could use their own hair to create Martian space suits

B Astronauts could use their own blood to build a Martian base

C Astronauts could use their own nail clippings to create rocket fuel

6 Grand delusions

A Capgras syndrome is the irrational belief that a familiar person has been replaced with an exact duplicate

B Fregoli syndrome is the irrational belief that a familiar person, typically someone persecuting the affected individual, is disguised as various other people

C Cotard syndrome is the irrational belief that part of …

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