If you’ve walked into an old school gym, you’ve probably bumped into an iron age strength sage who tried convincing you that there’s only one way to build a set of big traps: Shrugs. Lots of shrugs.

In a recent Reddit thread, natural bodybuilders discussed the exercises that grew their traps the most, with one simple movement standing out as a clear favorite from the 100-plus replies: shrugs. The ...