How Did David Corenswet Get That Superman Physique? The Inside Story of His Transformation

David Corenswet’s jaw-dropping Superman physique has fans asking, “How did he do it?” The latest X post from Superman showcases his journey from training to triumph, and the backstory reveals a rigorous regimen that turned the actor into the Man of Steel. Here’s the verified details on his transformation, straight from recent reports and interviews.

David Corenswet’s transformation into Superman has captivated audiences, and the recent X post from @Superman highlights his impressive journey. But how did David Corenswet get that Superman physique?

The answer lies in a meticulously planned workout and diet regimen, guided by celebrity trainer Paolo Mascitti. As the DC Universe film Superman approaches its July 11, 2025, release, Corenswet’s dedication to embodying the iconic character has become a focal point of media coverage.

What Was David Corenswet’s Workout Routine?

Corenswet’s workout was a blend of hypertrophy training and functional strength exercises, designed to build muscle while enhancing athleticism. Mascitti told GQ that Corenswet’s routine included:

• Hypertrophy Training: Focus on compound lifts like squats, deadlifts, and bench presses to pack on mass. Corenswet aimed for 8-12 reps per set, targeting muscle growth.

• Functional Strength: Exercises like sled pushes, kettlebell swings, and box jumps were crucial for developing explosive power and endurance, essential for Superman’s action sequences.

• Core and Stability: Planks, Russian twists, and medicine ball throws strengthened his core, ensuring a stable foundation for his superhero persona.

Mascitti noted that Corenswet worked out three to four times a week, with sessions lasting two hours each, even before they officially teamed up. This consistency was key to his transformation.

How Did Diet Play a Role in His Transformation?

Nutrition was as critical as exercise in Corenswet’s journey. Mascitti customized a diet to support muscle gain while maintaining leanness. Key components included:

• High Protein Intake: Chicken, eggs, lean beef, fish, and protein shakes were staples, providing the building blocks for muscle repair and growth.

• Moderate Carbohydrates: Oats, rice, quinoa, and sweet potatoes fueled his workouts, timed around exercise for optimal energy.

• Healthy Fats: Avocados, nuts, and olive oil supported hormone regulation and overall health.

Corenswet’s diet was strict, with Mascitti emphasizing the importance of timing and portion control. This approach helped him gain weight from around 200 pounds to a peak of 238 pounds, though he later shed some mass to achieve a toned look.

What Challenges Did Corenswet Face During Training?

The transformation wasn’t without hurdles. Corenswet admitted to Variety that the initial bulk didn’t feel great, as his body adjusted to the extra weight. “I didn’t fit into any of my pants,” he joked on the “Manly Things (Sort Of)” podcast, highlighting the physical and mental challenges of the process.

Mascitti’s Instagram post in May 2025 showcased Corenswet’s progress, captioning it, “David Corenswet worked his ass off; I can’t wait to share more of the training we did to prepare to play this iconic character.” The post featured images of Corenswet in the Superman suit and flexing in the gym, underscoring the intensity of his training.

How Does This Compare to Previous Supermen?

Corenswet’s approach differs from his predecessors. Unlike Henry Cavill, who relied on a more visible, skin-tight suit to showcase his physique, Corenswet’s Superman suit is sleeker and less revealing.

This necessitated a focus on functional strength and endurance, rather than just aesthetics. Bodybuilding Gold noted that while Cavill’s transformation was about raw muscle, Corenswet’s was about becoming a versatile athlete, ready for the demands of the role.

Some Closing Thoughts: What’s Next for Corenswet’s Superman?

As Superman nears its theatrical release, Corenswet’s physique has become a symbol of his commitment to the role. The X post from @Superman not only celebrates his journey but also ties into broader DCU developments, like Peacemaker Season 2’s connections to the film.

With Gunn’s vision for a cohesive universe, Corenswet’s transformation is just the beginning of his impact on the DCU.