For continental style knitters, the Norwegian purl can be a more comfortable way to purl because it reduces stress on the left hand.
Although, the Norwegian purl almost eliminates the need for any left hand movement, there is a fluid flourish of the right needle that's quite different than the purling motion many knitters are used to. The motion is only part of the story, though. True Norwegian knitting also incorporates a more pinched grip than what's often used with Continental style knitting.
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