Windows Phone owners have their choice of activity tracking apps, but few of those apps will tell you how to remain healthy after you've taken off your running shoes. It's a good thing that Microsoft has released a beta of Bing Health & Fitness for Windows Phone, then. The software uses GPS to quantify your biking and running like many of its peers, but it also provides health advice; much like the Windows 8 app, you'll find a diet tracker, exercise instructions and a symptom research tool. Your info will also sync across all your Windows-based gear. Those eager to slim down and shape up just have to swing by the Windows Phone Store to get started.