If you're part of that 25% of the population that sneezes when we look at the sun, it's all because your pupillary light reflex and the sneeze reflex pathways just got a little crossed.

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Scientists have found that your nose is very much helping you decide who your partner should be. This phenomenon is linked to our immune system and a part of our body’s DNA known as the major histocompatibilty complex (MHC).

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The idea that we are able to sniff out a good boyfriend/girlfriend may sound a bit strange at first but it actually forms an exciting area of study within Evolutionary Psychology.

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