This time of year can bring up a lot of negative cultural messaging — and therefore negative self-talk — around bodies and working out, and while things are changing for (hopefully) the better, we’ve GOT to know where we’ve come from and how we got here so that we can get to where we truly want to be. Danielle Friedman is an award-winning journalist and author of the critically acclaimed cultural history of women's fitness Let's Get Physical: How Women Discovered Exercise and Reshaped the World.