Kayla Itsines Is Officially the No. 1 Fitness Influencer She beat out Jen Selter on this list of very toned individuals. By Dena Silver
This Exercise App Offers an Easy Alternative to ClassPass Aaptiv allows users to workout at home with a synced playlist By Margaret Abrams
Meet Kayla Itsines: The Fitness Trainer Taking Over Instagram The brains (and six-pack) behind the #BBG movement sweeping Instagram reveals her bad habits, guilty pleasures and game changers. By Katherine Kerrick