Where Are "The Biggest Loser "Trainers Now? All About Bob Harper, Jillian Michaels and More Coaches, 5 Years After the Show Ended Samantha StutsmanAugust 19, 2025 at 11:19 PM Mitchell Haaseth/NBCU Photo Bank/NBCUniversal via Getty (2) ; Araya Doheny/WireImage Bob Harper; Jillian Michaels; Dolvett Qu...
- - Where Are "The Biggest Loser "Trainers Now? All About Bob Harper, Jillian Michaels and More Coaches, 5 Years After the Show Ended
Samantha StutsmanAugust 19, 2025 at 11:19 PM
Mitchell Haaseth/NBCU Photo Bank/NBCUniversal via Getty (2) ; Araya Doheny/WireImage
Bob Harper; Jillian Michaels; Dolvett Quince -
The Biggest Loser aired from 2004 to 2020
Bob Harper and Jillian Michaels became the competition show's most well-known trainers
The hit series is the subject of Netflix's Fit for TV: The Reality of the Biggest Loser, which premiered on Aug. 15
The Biggest Loser wasn't just a hit for NBC — it also helped launch the careers of several trainers.
The competition show put participants through a grueling 30-week boot camp run by a lineup of coaches — most famously Bob Harper and Jillian Michaels. Along the way, contestants followed strict workout routines and nutrition plans, all in pursuit of one goal: to drop the most weight and walk away with $250,000.
The Biggest Loser debuted in 2004 and ran for 18 seasons. The competition series is the subject of Netflix's Fit for TV: The Reality of The Biggest Loser, which premiered on Aug. 15. The three-part docuseries delves into the darker side of NBC's reality show, interviewing former cast and crew members about the ethical and health implications of the series' extreme weight-loss methods.
Several producers and former contestants participated in Fit for TV, but Harper was the only trainer who made the final cut.
"Always remember we were trying to make an entertaining show," he said in the docuseries. "What's more important for weight loss? We all know it's diet, but that becomes boring television. You know what's not boring television? To see us in a gym yelling, screaming ... and producers loved that s---. They were like, 'We want them to puke! We want the madness of it all!' "
Here's everything to know about where The Biggest Loser trainers are today.
01 of 11
Bob Harper
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Bob Harper on 'The Biggest Loser' season 4; Bob Harper in 2025
Harper is practically synonymous with The Biggest Loser. He trained contestants for the first 16 seasons and hosted the final two of the show's 18-season run.
Between seasons 17 and 18, Harper suffered a heart attack that left him unconscious for two days in February 2017.
"It was one of the hardest things I've ever gone through," he said on Fit for TV. "I couldn't walk around the block. I know what it's like to have to look at everything that I eat and have to change how I live and what I do."
In January 2025, Harper returned to reality TV as a contestant on NBC's The Traitors season 3, ultimately finishing in 15th place.
He's now in his "retirement era," he told The Guardian in August 2025. He still teaches hot yoga in New York City.
In June 2019, Harper got married to husband Anton Gutierrez. The couple share three dogs named Karl, Vivienne and Ralph.
02 of 11
Jillian Michaels
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Jillian Michaels in 2007; Jillian Michaels in 2025
Michaels became a household name as a coach on The Biggest Loser, serving as a trainer for 12 of the show's 18 seasons.
Her fame on the series led to a spinoff on NBC titled Losing It with Jillian, which ran for one season in 2010.
After leaving The Biggest Loser for good in 2014, Michaels reflected on her decision in an interview with PEOPLE.
"In the beginning of the show, it was [about] tough love. You saw the tough, and you saw the love," she said, explaining that she felt her portrayal in later seasons depicted her as being harsh, rather than helpful. "You saw none of the relationships, none of the bonds that I build with my clients."
Nowadays, Michaels is focused on the growth of her podcast, Keeping It Real: Conversations with Jillian Michaels, and her app Jillian Michaels: The Fitness App.
As for her personal life, Michaels is a mom of two children, whom she shares with her ex-fiancée, Heidi Rhoades. She married her wife, fashion designer DeShanna Marie Minuto, in 2022.
Over the years, Michaels has also made headlines for her political views. On Aug. 14, she defended her stances on President Donald Trump and White people during a heated debate about slavery on CNN NewsNight with Abby Phillip.
03 of 11
Kim Lyons
Mitchell Haaseth/NBCU Photo Bank/NBCUniversal via Getty ; Kim Lyons/Instagram
Kim Lyons on 'The Biggest Loser' season 4; Kim Lyons in 2020
Kim Lyons was a trainer on seasons 3 and 4 of The Biggest Loser.
She went on to compete on NBC's American Ninja Warrior in 2014 and debuted her fitness brand, Bionic Body, that same year. More recently, she launched Simplified Nutrition in 2021 — an eight-week program designed for women over 40.
Lyons has been married to bodybuilder Gunter Schlierkamp since 2007, per Instagram. They share one son.
04 of 11
Brett Hoebel
Trae Patton/NBCU Photo Bank/NBCUniversal via Getty ; Brett Hoebel/Instagram
Brett Hoebel on 'The Biggest Loser' season 11; Brett Hoebel in 2021
Brett Hoebel joined season 11 of The Biggest Loser as a trainer.
He is now the founder of Hoebel Fitness and the co-founder of Sweat With Soul — a "positive vibes apparel" brand, per the website.
05 of 11
Cara Castronuova
Michael Kovac/WireImage ; Cara Castronuova/Instagram
Cara Castronuova in 2011; Cara Castronuova in 2022
Two-time Golden Gloves boxing champion Cara Castronuova was also a trainer on season 11 of The Biggest Loser.
She has since pivoted away from fitness. Castronuova is now an investigative reporter for The Gateway Pundit — which has been known to repeatedly share false information, per a 2022 study — and a reporter for Newsmax, according to her LinkedIn.
06 of 11
Dolvett Quince
Darren Michaels/NBCU Photo Bank/NBCUniversal via Getty ; Emma McIntyre/Getty
Dolvett Quince on 'The Biggest Loser' season 17; Dolvett Quince in 2019
Dolvett Quince held a long-running role on The Biggest Loser, training contestants for a total of six seasons from 2011 to 2016.
He is now the co-founder of Tabula Rasa, a company that curates luxury corporate and lifestyle wellness retreats around the world. Quince is also the father of one son, Isiah.
07 of 11
Anna Kournikova
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Anna Kournikova on 'The Biggest Loser' season 10; Anna Kournikova in 2019
Former professional tennis player Anna Kournikova served as a trainer on season 12 of The Biggest Loser.
These days, Kournikova is raising three kids with her longtime partner, singer Enrique Iglesias.
08 of 11
Jessie Pavelka
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Jessie Pavelka on 'The Biggest Loser' season 16; Jessie Pavelka in 2022
Jessie Pavelka appeared as a trainer during season 16 of The Biggest Loser.
By then, he had already co-founded Pavelka, a wellness company focused on reshaping workplace culture. Today, he's still leading the charge as its CEO, according to LinkedIn.
Pavelka is currently dating Therese V. Pham. He shares one son with his ex-wife, Sitara Hewitt.
09 of 11
Jennifer Widerstrom
Chris Haston/NBC
Jennifer Widerstrom on 'The Biggest Loser' season 17.
Jennifer Widerstrom was a trainer on seasons 16 and 17 of The Biggest Loser.
She now serves as the vice president of coaching for Arnold Schwarzenegger's The Pump app, per her Instagram bio. Widerstrom also co-hosts The Kids Table podcast alongside fellow celebrity trainers Gunnar Peterson and Luke Milton.
10 of 11
Steve Cook
John Britt/USA Network/NBCU Photo Bank via Getty ; Steve Cook/Instagram
Steve Cook on 'The Biggest Loser' season 18; Steve Cook in 2022
Bodybuilder Steve Cook joined the 2020 USA reboot of The Biggest Loser as a trainer in its 18th season.
Cook, who has more than 2 million followers on Instagram, owns the Fitness Culture Gym and the Fitness Culture app.
He shares one daughter with his wife, Morgan Rose Cook, whom he's been married to since 2022.
11 of 11
Erica Lugo
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Erica Lugo on 'The Biggest Loser' season 18; Erica Lugo in 2020
Erica Lugo was also a trainer on the final season of The Biggest Loser in 2020.
Today, she's focused on helping women 35 and over beat "hormone chaos, weight gain and low libido," per her Instagram bio.
Lugo married Danny McGeady in December 2020. The couple both have children from previous relationships — McGeady has a son and a daughter, while Lugo has a son.
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