Selena Gomez's Trainer Amy Rosoff Davis: 10-Minute Workout Hack - Us Weekly

Selena Gomez's Trainer Amy Rosoff Davis: 10-Minute Workout Hack  Us WeeklySelena Gomez Opens a New Window. 's trainer, Amy Rosoff Davis, says it's A-OK to split up your workouts in the *service* of time — and if you've got 10 minutes, ...