You can file this under “when men were men.”
In Iceland, stones were used to qualify men to work on fishing boats.
Four different stones were available. The heaviest stone you could manage to lift to a ledge at hip height designated your ability as follows:
“full strength,” weighing 155 kg (341 pounds)
“half strength,” 104 kg (228.8 pounds)
“weakling,” 49 kg (107.8 pounds) and
“useless,” 23 kg (50.6 pounds)
A 49kg “weakling” lift was the minimum to qualify for fishing boat work.
You’d be qualified you as “useless” in Iceland’s fishing industry if the most you could heft was a 23kg stone.
I saw an article on lifting stones for strength workout.
An interesting observation from the article was that your brain knows better than to allow you to lift things your hands cannot grip.