'Extreme Weight Loss' Returns With 'Most Powerful Season Ever'

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Trainer Chris Powell is already calling the upcoming season of Extreme Weight Loss, the powerful season ever and ET has a sneak peek!

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The clip shows twin contestants Robert and Raymond, who were without parents during their teenager years.

"When we were 13 years old, our mom was taken to prison," one of the twins says in the clip.

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"Our dad packed up all his stuff and left," said the other. "We were there all on our own."

Co-host Heidi Powell praised the brothers for their positivity and dedication.

"It's nice to see how they push each other throughout the journey, instead of holding each other back like they did for so many years," Heidi said.

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When the twins joined the show, they weighed close to 400 pounds each. Tune in for the new season to find out whether they accomplished their weight-loss goals.

Extreme Weight Loss returns to ABC on Tuesday, May 26.

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