"I want to push myself in training, but never too far"

Mark runs a lot of miles! And with a lot of volume inevitably comes fatigue but as runners we know it can be tricky to get an accurate measurement of exactly what that means 🤔 This is where metrics like running tolerance and body battery from your Garmin watch can make all the difference. Having a bit of data helps inform those decisions about when to rest and when to push. That way you stay in the game consistently which is what really builds fitness and speed.