I hope people aren't upvoting this study because it fits a certain narrative in their head - because the study explicitly states that it is not able, or looking, to determine a causal relationship between grip strength and marriage.
Narratives are for those who have to calm the fuels sloshing around in the tanks - and yes, there is no real alternative to this. There is no need to protect any narrative- just point at japan, which does not take on new rocket fuel and thus will crash and burn.
From a individuals perspective ignoring the narrative- the social contraption you build and protect is a monstrosity. I m sure it makes perfect sense, if you want humanity to go somewhere, before everything falls apart due to resource starvation and long term environment damage.
I can't think of many other reasons why this article would be upvoted. It focuses on a vanishingly small population of a certain age range in one part of the world. The conclusion I'm coming up with is that men born between 1923 and 1948 in Tromso, Norway who are married are more likely to have a higher grip strength than unmarried men.
But shouldn't, from the PUA, etc., viewpoint, that lead to lower rates of marriage, since more desirable men should have less need to offer commitment to secure sex?
Also, being married doesn't prevent a man from having sex outside of marriage.