The Biggest Loser is still keeping the identities of its mystery trainers a secret, even after its first episode tonight, but reports on fitness blogs suggest they are Brett Hoebel and Cara Castronova. Lisa Johnson writes that she received an anonymous tip about the identities of the trainers, and verified that by comparing their voices to the promos for the 11th season.

Cara Castronova is a boxer and actor who once appeared on Law & Order whose management company brags about auditions she’s been on, which tells you something about her acting career. Her qualifications as a trainer aren’t clear, prompting Lisa Johnson to write that she “potentially doesn’t have ANY certifications to speak of working with a morbidly obese population?”

The other trainer, Brett Hoebel, has more of a fitness background. His nickname is apparently “El Capitan,” and his web site calls him “one of the most sought-after weight-loss, nutrition and lifestyle coaches in New York.” He appeared on Discovery’s Fit Family in 2005, and created programs such as RevAbs, which is, as far as I can tell from the trailer below, is an opportunity for him to take off and/or lift up his shirt: