Turning 50 is a huge milestone birthday. These days it seems like a lot of my friends are turning 50, or getting close. I’m not far off from 50 myself, and this year I have started recognizing this means physical changes. Nothing surprised me so much as when my metabolism changed dramatically at 40. So, since I’m interested in what’s going to start happening to me and what I should do, I figure a lot of other soon-to-be-50 ladies will be interested, as well. What to Expect When You’re Expecting the Big 5-Oh As women age, we experience changes in our bodies. These changes can lead to everything from a…