Bob Harper

Bob Harper is a personal trainer, author and television personality best known for his longtime role on The Biggest Loser, where he became one of the most recognizable fitness experts on TV. Harper was born in Nashville, Tennessee, he grew up on a cattle farm before developing an interest in health and fitness. Harper attended Austin Peay State University in Tennessee but did not graduate, ultimately pursuing a career in personal training.

Harper built his reputation as a celebrity trainer in Los Angeles, working with high-profile clients before joining NBC’s The Biggest Loser in 2004. As one of the show’s original trainers, he helped contestants navigate dramatic weight-loss journeys and became a fan favorite throughout the series’ run. He began to host the competition in 2015, remaining on the show until its final season aired in 2020.

His presence in the mainstream fitness and lifestyle space led to appearances on programs including The Dr. Oz Show, Today and The Real Housewives of New Jersey. He has also authored several health and wellness books, including The Skinny Rules (2012) and The Super Carb Diet (2017). He later appeared as an advisor on The New Celebrity Apprentice and competed on season 3 of The Traitors.

In 2017, Harper suffered a heart attack and underwent cardiac arrest, an experience that led him to publicly discuss heart health and recovery.

Harper publicly came out as gay in 2013 during an episode of The Biggest Loser. He got engaged to Anton Gutierrez in 2019.