Healthista writer Olivia needed to lose weight after gaining three stone since leaving university. Here’s how an 8-week F45 Transformation helped her lose a stone So yep that above is my transformation picture, but first things first, let me tell you a story about a girl who managed to put on over three stone in just two years.  Let me tell you a story about a girl who put on over three stone in two years. Once upon a time…