Some of those union forwards are pretty bloody tough, but I think the league forwards have it over them in terms of fitness. League forwards have to do a lot more tackling and hitting the ball up than union forwards, who need to be good at scrummaging and rucking as well as lineouts.
The NZ haka is pretty awesome to watch, though ultimately futile (I welcome responses from Azurewolf on this topic.

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How come you know about union Caleb? What's your Kiwi connection?
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