At 6ft 8 and 280lbs, Eben Etzebeth must scare the sh*t out of his own family. This rugby player is still under 25 years old, but is such a tank he had to have custom made dumbbells ( source ) specially made for him, because the 65kg (145lb) ones were, and I quote, ‘too light’. The final product: two dumbbells which weigh in at 75kg each! Anecdotal interviews online show players stating that Eben used the dumbbells not for rows or presses, but for curling. Yes, curling. If you read the intro at the start of this list, you’ll notice that Eben quite literally arm curls an average sized man.