The actor showed off his toned physique as he squeezed in a workout between takes on the New Orleans set of Focus on Friday.
Wearing just blue shorts and trainers, the topless hunk was put through his paces as he completed his workout with a trainer.
Will is in the Big Easy to shoot scenes for his upcoming film Focus, which follows a con man (Smith) who falls for a rookie (Margot Robbie) right as he's planning an elaborate theft. And although Margot, 23, is over 20 years younger than Will, he looked like he will have no trouble keeping up with her. In the movie Will also stars opposite Rodrigo Santoro, who plays a powerful auto racing team owner who wants Robbie's affections for himself.
Toned: Will donned just a pair of blue shorts as he was put through his paces on the New Orleans set of Focus
But Focus isn't the only project Will's set to begin work on - he has a slew of confirmed and rumoured projects on the horizon, including some big-budget sequels.
Will has been confirmed for the title role of Hancock 2, which follows a ne'er-do-well superhero who walks the line between saviour and destroyer.
He is also tipped to reprise previous roles for sci-fi thriller I, Robot 2 and buddy-cop action pic Bad Boys 3.
So that's how he stays in shape: Buff Will is put through his paces by a trainer
Action man Will: Although he's about to turn 45 it doesn't appear as if Will is set to give up his action man roles any time soon
Still got it: Will is also tipped to reprise previous roles for sci-fi thriller I, Robot 2 and buddy-cop action pic Bad Boys 3
Will no doubt wants redemption in the aftermath of summer domestic box-office flop After Earth, in which he starred alongside son Jaden.
Though the film fared much better on the international stage, its $27 million on the first weekend was the worst opening for a summer event film in two decades for Will, according to Entertainment Weekly.
Keep it up: The training sessions are obviously working with action man Will’s impressive muscles on display
Lucky lady: Will has been married to Jada Pinkett Smith since 1997 and the couple have two kids together