If you haven't already heard about Kayla Itsines, the 24-year-old Australian trainer and her "BBG" (Beach Body Guide) community you must join the party. Her 28-minute high intensity 12-week guides are a favorite among moms all over the world. I'm a huge fan because I want a great workout and don't have a lot of time. It's also doable anywhere from my garage to the gym and while on vacation. Now that I'm in mid-pregnancy I'm having to modify lots of the moves so that I stay within a 140 heart rate, but I still feel like I'm getting a kickass workout! Kayla has created a huge worldwide "BBG" following with group meet-ups in practically every city, if you're more of a group workout kind of gal.