Dr. Wessler is a self-confessed health tracking enthusiast and has also participated in large-scale clinical trials that ...

Your Garmin watch uses a mix of information to guess your calorie burn. It looks at how much you move using sensors that ...

While your Apple Watch excels at measuring some fitness metrics, when it comes to calorie counts, it struggles and flails like me on a too-rare gym visit. A new study raises questions about how much ...