By Andrew Liszewski
There are already plenty of watches that will monitor your heart rate and can keep track of the calories you’ve burned while exercising, but the T4C from Suunto is the first I’ve seen that uses that data to create a custom workout regime. You simply select a date that you’d like to train for, like an upcoming marathon, and the watch’s Coach software let’s you know how long and how intense you should train each day to reach your goal. And if you decide to slack off or even over do it one day, the T4C will automatically adjust your ten-day workout cycle accordingly to compensate. You can order one from Amazon for $219, since the Suunto website seems to have mysteriously vanished.