Polar M400 GPS Running Watch
There are a multitude of signs you’re overtraining. But one of the simplest way to ensure that doesn’t happen is to spread your workouts out with sufficient rest in between to make sure you’re not taxing one specific energy system too much or burning out altogether. Or, you can use the Polar M400. The GPS running watch analyzes how your training affects you and helps you compare the load on your body over different sessions. For example, it can monitor how much stress a sprint workout creates one day versus a long interval workout on another, so you can recognize your personal weak points and adjust your training accordingly. Small tweaks to the intensity and duration of your sessions can make you a better athlete. Plus, the watch suggests how much time it will take you to recover before your next difficult training session—so it really takes a lot of the guesswork out of the equation.
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