Orlando Bloom recently shared the intense side effects he experienced from losing weight for his latest role as a boxer in the thriller The Cut.

If you're not deeply involved in the world of boxing, you might think the sport is all about building muscle, getting bigger, and getting as strong as possible. But in reality, boxers need to "make weight" for the class they're fighting in, with weight divisions ranging from "strawweight" under 105 pounds to "heavyweight" over 200 pounds, as explained by Fight Camp.

This weight-cutting process is central to Bloom's new film, and he discussed it in detail during an appearance on the British talk show This Morning. He explained, "Cutting weight is what we focus on, and that's really the fight. It's really a kind of commentary on the internal mind, the stress that the body goes through, the mind goes through, and it was very, very real."

The Pirates of the Caribbean star admitted that his transformation went beyond just method acting and that he "wouldn't recommend" the extreme methods he used to get into character. "It was definitely not something to take lightly," he added.

Bloom credited his "great nutritionist" for guiding him through the weight loss process, which included reducing meals from three a day to two, and eventually to just one. He also gave up protein powder. In the final three weeks of his transformation, Bloom said he was mostly eating "tuna and cucumber."

While his transformation may have looked good for the role, Bloom explained the significant toll it took on him physically and mentally. He admitted that he had "no energy or brain power" and felt "just exhausted mentally, physically," describing himself as "hangry" and "a horrible person to be around."

Bloom made clear he did not recommend the transformation (ITV)

The actor also opened up about feeling "paranoia" and "intrusive thoughts," saying, "We're supposed to eat and sleep and take care of ourselves."

He clarified that the drastic transformation was only for the movie, although he pointed out that professional athletes often undergo similar training on a regular basis.

Bloom previously told People that he was "excited by the challenge" of his transformation, but also admitted that his lack of sleep had a negative impact on his mental health. "Turns out you can't sleep when you're hungry!" he said.