With the high rate of obesity in the United States, it's fantastic to see the massive wave of fitness tools available, even if it's just a trend. And with the companionship of your Apple Watch, keeping track of your progress or fitness goals has never been easier. As my LA Fitness intercom repeatedly announces, "What gets measured gets improved." (Corny, but very true.) While your Apple Watch does come with its own Activity and Workout apps, I'm going to show you some third-party fitness opti...