Man of Steel 2013 is opening in theatres in a week's time. Superman Henry Cavill talks of "hell and wonderful" workout which he had to go through for the prized role. Meanwhile, fans of E.L. James' "Fifty Shades of Grey" keeps hoping Cavill could also sport his sculpted frame as Christian Grey.

As Clark Kent, Henry Cavill has to offer more than just fine acting skills. His body has got to look right, too. Apparently, he was subjected to some workout fit for a superhero. The producers wanted Cavill to be in his best shape in his sexy Superman suit.

"[The workout] was hell and wonderful at the same time," Cavill said. "[My trainer] Mark Twight gave me a whole bunch of workouts to do by myself to get my fitness levels up, so that when I arrived in LA the really hard stuff would start," Cavill told Shortlist magazine.

Cavill, at some point, had believed he was not going to endure the intense training he had to go through to be a convincing Man of Steel. "I remember one moment, doing some horrible rowing sprint thing, and I said, 'I can't do this Mark, I can't, I'm done,'" Cavill recalled.

Twight was not going to go easy on Cavill despite his self-doubt. "No you're not, don't listen to the lies," the trainer told Superman. Cavill eventually carried on, and was surprised to have completed the required sessions.

It took six weeks of Man of Steel filming before Henry Cavill went shirtless before the camera. After the intense training and strict diet followed by filming, Cavill admitted to a massive food indulgence. Cavill feasted on ice cream, apple pie and pizza.

"I just sat in a trailer and ate it. I passed into a food coma after that," he told the magazine.

Meanwhile, fans of E.L. James' erotic series, "Fifty Shades of Grey," are hoping Cavill could take advantage of his shape now for the role of Christian Grey. Cavill joins Ian Somerhalder, Matt Bomer and Ryan Gosling among the fan favourites to play the billionaire Mr Grey.

In a separate interview, however, Cavill shrugged the fan clamor. Careful not to be misinterpreted, the Man of Steel actor just said he would discuss the subject when there is something to discuss about it.

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