A:Answer I can't speak about the other Fitbits, but tennis is one of the exercises one can choose on the Surge. I don't know what information it gives different from the 'workout' exercise mode I often use, which gives duration, intensity (heart rate) and calories burned. A nice thing about the Fitbit is that it's personal: you enter (or with the right smart scale, it syncs) your height, weight, body fat... and Fitbit does the rest. I'm attaching photos of the recognized activities (you choose 7 for your Fitbit) and the automatically recognized exercises, by default recognized after 15 minutes. These are found most easily in the Fitbit online app under settings/device.
