If you've ever looked at Jennifer Aniston's amazingly toned legs, bikini-ready abs, and annoyingly perfect arms and thought 'how did that happen?', well, you're not alone. That's why we asked Mandy Ingber, yoga instructor to the stars (including Glamour's own September 2013 cover star, Jennifer Aniston!) and author of the book Yogalosophy to talk us through some of Jen's favorite moves. Watch for her step-by-step instructions to Jennifer-level hotness.