We're pretty sure that we could face the Haka in 1922 and not break a sweat.
That's a different story in 2015 because nowadays there are few more terrifying sights than seeing 22 behemoths slapping their things and roaring words that we'll never understand.
Rugby Today have posted a video that takes you on a journey of the New Zealand war dance over the last 90+ years and it's fascinating to see just how more intense it's become over time.
It's gone from a rather timid little dance to one of the greatest and impassioned spectacles in all of sport and, no matter what opponents might say, it has to have a psychological impact ahead of kick-off.
https://youtu.be/wrZau5O16Wo
