Sportscaster Erin Andrews is sharing her diet and fitness secrets.

In the September issue of Heath Magazine, the 36-year-old "Dancing With the Stars" co-host opens about her fitness struggles, saying that her regimen includes working out in a group setting rather than working alone.

"If I worked out by myself - because I'm so ADD - I'd check my phone, look in the mirror and pick a zit," Andrews told the magazine. "I need a class because there are other people there pushing me. I love Physique 57 - I've found that changes my body the most. I've always been tall and lean, but everybody has their issues. I've got saddlebags and a rear end that was always kind of flat and wide. Physique 57 is lots of squats and stuff for your inner and outer thighs."

She told the magazine that she considers herself at a disadvantage because her boyfriend, L.A. Kings player Jarret Stoll, is always in shape.

Andrews, who said she has never had, nor would ever consider plastic surgery, told the Magazine that she feels her "sexiest" at the end of a productive day.

"I think maybe it's at the end of the night, after a football game or Dancing with the Stars, and I'm able to take everything off and just be in a sweatshirt and a pair of boy shorts, because that's me: casual, wearing cotton," she told Health.

In the magazine, Andrews recalled being known as a "guys girl" for being one of the only women working in a male-dominated field. She said she wasn't aware that it was a problem until people starting bringing it up.

"I didn't even think about it until I was in the industry and people started bringing it up," Andrews said. "I'm not really allowed to be a female in my world of sports broadcasting, because if you don't blend in and be a guy, you're not gonna fit in. You're not gonna be included in the jokes, and they're not gonna want to take you to the bar at night... and you won't hear all the real stories about what's going on with the teams, because everybody will be like, 'She's just a girl.'"