Buffy the Vampire Slayer turned Ringer star Sarah Michelle Gellar has been looking fit and fabulous for over a decade. With her physically demanding roles, the hot mama of 2-year-old Charlotte Grace has to keep her body strong and sexy – and Shape magazine can reveal all of her fitness secrets.

“Sarah’s body type was perfect, but she just needed to be stronger because she does a lot of her own stunts,” her trainer Phong Tran of Joe’s Gym reveals about how she had to get in shape for Ringer. “Everything we did had to center around a very strong core, and her abs and back always had to be engaged.”