So, I'm not a big workout buff, but I do like to know how far I've walked at the end of each day. Yesterday, I looked on my watch (achievements), and it said I had walked something like 3.14 miles. My phone (Health app) said I had walked over 4. Why would there be a mile difference between the devices? Is there a better app to get more accurate distance traveled with the watch? Should I be using the workout app with an open goal? Not a big deal for me personally, but the difference did seem kind of glaring.