BBG: The Supereffective Fitness Program You Need to Know
We’re totally crazy about Australian trainer and Instagram star Kayla Itsines and her program, BBG. But what exactly is BBG? Let’s take a step back and look at the program that made Kayla such a star and her clients so obsessed. Related Stories: 15 Incredible Workout Ideas From Trainer Kayla Itsines What Is It? BBG…