David Corenswet’s Intense Training Fuels Superman Sequel Buzz

David Corenswet is making headlines as he hits the gym hard in preparation for his return as the iconic superhero in Superman: Man of Tomorrow. With filming set to kick off in just a few months, the actor has been spotted training alongside his trusted personal coach, the same expert who helped him achieve his superhero build for his first DCU appearance. The recent gym photo, though just a glimpse, has sent fans into a frenzy, signaling that everything is on schedule for the cameras to start rolling in April 2026.

While Nicholas Hoult, who plays Lex Luthor, confirmed the production timeline last November, updates have been scarce as the new year unfolds. That’s why this new image of Corenswet working out has caught so much attention—it ’s a quiet but clear sign that the groundwork for the highly anticipated sequel is underway. The snapshot, shared by celebrity trainer Paolo Mascitti on his Instagram Stories, quickly made the rounds online, with fans celebrating Corenswet’s progress and commitment to stepping back into the legendary suit.

Fans React to Corenswet’s Transformation

Social media lit up as soon as the photo surfaced. One fan on X/Twitter speculated,

“With David Corenswet back in Superman shape and filming this April, the hype for Man of Tomorrow is real. James Gunn says this isn’t just a sequel; it’s a deep dive into Clark and Lex’s dynamic. Seeing David get back to ‘fighting weight’ makes me think the action in this one is going to be on a whole different level.”

Another praised the actor’s dedication:

“This also means intense workouts, strict diets… all for the sake of delivering that perfect Superman performance. Respect!”

A third supporter added,

“Rooting for you and your training, David Corenswet!”

Building the Man of Tomorrow

Corenswet’s journey to embody the Man of Steel has been nothing short of grueling. Under Mascitti’s guidance, he followed a demanding fitness regimen and a strict meal plan, consuming up to 6,000 calories daily to bulk up for the role. The actor’s weight climbed from 200 to 240 pounds, with daily two-hour sessions focused on compound lifts and squats to sculpt his physique. Mascitti revealed that much of their training had to be done virtually, but seeing them together in the gym now highlights their shared commitment to bringing Superman back to life.

Last time around, Corenswet began his training five months before production started. While it’s unclear exactly when he and Mascitti resumed their routine, it’s no surprise to see him back in action, especially with filming for Man of Tomorrow just over two months away. The sequel is set to hit theaters on July 9, 2027, following the releases of Supergirl and Clayface in 2026. Its spot on the release calendar means it will arrive before Matt Reeves ’ The Batman Part II, which is scheduled for October 1, 2027—over five years after the original film debuted.

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