We've always been happy to look a bit daft for charity, but Movember - the growing of moustaches in the month of November to raise awareness of men's health issues - has taken things to a whole new level.
Now thousands take part in this annual event, and many other charity campaigns have spawned as a result.
So, what is Jeans for Genes Day (which actually pre-dates Movember by some way)? And have you ever undertaken a Dryathlon? Here is our infographic breakdown of the rise of charity campaigns...
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