Rep. Paul Ryan at a Wisconsin gym in December 2011. More photos at (Gregg Segal for Time)

The magazine included some insight from Tony Horton, the fitness guru behind the buff lawmaker’s favored P90X workout plan and explains that “it was Ryan’s fitness regime (and Herculean strength on all things fiscal) that inspired the workout-themed sitting.” In case you thought they were simply going for gratuitous frat-boy kitsch.

Update: Ryan aide calls photo publication ‘poor judgement’

Also: Paul Ryan’s widow’s peak: A game-changer in GOP veepstakes?, 4/6/12

(Yes, Time has more Paul Ryan workout photos — go look!)

(Gregg Segal for Time)

More Reliable Source: Real-life ‘Argo’; Led Zeppelin; Palin family memoir; Jennifer Garner; Andrew Sullivan; Breitbart documentary