Can 'The Biggest Loser's' New Winner Keep the Weight Off?

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Toma Dobrosavljevic was crowned The Biggest Loserwinner Thursday night by just .01 percent of body fat during the show's season finale, but can he keep the weight off?

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Toma lost 177 pounds, going from 336 pounds to 165 pounds through the grueling workouts on the show. While he had trainers to motivate him around the clock while he was competing for $250,000, now he will be left to his own devices. Fortunately, Toma told us that he will still be held accountable.

"I am really fortunate to have an amazing support system back home," Toma told ET.

The senior project manager from Addison, Ill. added that The Biggest Loser staff is still just a phone call away.

"I feel like I've made friends here for a lifetime. I think I can reach out to the doctors, the nutritionists, the trainers, anytime if I have an issue," Toma said.

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"Our emails and our phones and everything else is wide open," trainer Jessie Pavelka agreed. "They can always send us an email or call us. We're there, but this is about them. We can't hold hands anymore."

Runner-up Sonya Jones (who lost 144 pounds, going from 283 to 139) is also determined to stay the course.

"If you fail to plan, you plan to fail," Sonya told ET. "So what I'm going to do is just continue to do my best to plan out meals and plan out my exercise and go after it."

This follows comments from season two contestant Suzanne Mendonca criticizing the show after gaining 130 pounds back since her departure from the show. Season 11 contestants Olivia Ward and Jay Jacobs shot down her claims against the show.

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"They do give you all the tools that you need plus you have phone numbers galore, and it's your responsibility to reach out if you feel like you're sinking," Olivia told ET.

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