Create a dynamic and energetic image of a young Goku from Dragon Ball Z, depicted during a workout session. Goku should be wearing a bright blue Superman t-shirt, with the iconic "S" logo prominently displayed on his chest. The t-shirt should fit snugly, showing off his well-defined muscles and emphasizing his youthful, athletic physique.

Goku should be in the middle of lifting a set of very heavy dumbbells, showcasing his immense strength and determination. His expression should be one of intense focus and effort, with beads of sweat on his forehead and a look of fierce concentration in his eyes. His trademark spiky black hair should be slightly tousled, adding to the sense of movement and exertion.

The background should depict a training area or gym, with various workout equipment and weights scattered around. Use vibrant colors and dynamic lighting to create a sense of action and energy. The lighting should cast strong shadows, highlighting Goku's muscular form and the heavy dumbbells he is lifting.

Additional Details:

Include small, subtle references to both Dragon Ball Z and Superman, such as a poster of the Dragon Balls on the wall or a Superman emblem on the gym equipment.
Goku's outfit should also include his familiar orange martial arts pants and blue wristbands, blending his iconic look with the Superman t-shirt.
Use motion lines or a slight blur effect to emphasize the weight and movement of the dumbbells, enhancing the sense of action and strength.
This image should capture the essence of young Goku's indomitable spirit and strength, blending elements of both Dragon Ball Z and Superman in a vibrant, dynamic composition. The combination of Goku's intense workout and the iconic Superman logo should create a powerful and inspiring visual.