Make sure you're spending enough time in the lower heart rates (zone 2 and below) 80-90% of total volume and rest of the time, make sure you hit the hard stuff hard!
You don't have to go overboard in identifying key metrics when you're first starting out in triathlon. Master these two metrics now to improve your training and racing: http://bit.ly/2bfv1Q2 #triathlon #swimbikerun #triathlontraining
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