Celebrity Slim-Down Secret: Harley Pasternak's Sweet Spinach Smoothie

This spinach smoothie from trainer Harley Pasternak is a favorite of his celebrity clients (Julianne Hough is a fan!) for helping them stay on the right track, especially after an indulgent period. Spinach is the star in this creamy smoothie, and for good reason – with just one 16-ounce serving, you’ll be getting your entire…