190+ - Uncomfortably hard - bad for me
180s - Uncomfortably hard - good for me
170s - Comfortably hard
160s - Moderate
150s - Easy
<150 - So easy it's hard (painfully slow)
The heart rates are just ballpark numbers, subject to fluctuations in weather and terrain, but at least it gives me a starting point. I have yet to determine exactly what percentage of time I need to spend in each zone, although there seems to be a consensus that one should follow the 80/20 rule: 80% of miles should be easy. So I need to plan to spend most of my time in the cool color zones. And after Sunday, I hope to God to stay out of the red zone from now on!
This approach also maps onto Sunday's lesson about the importance of running happy. Run smart, yes. Run fast, preferably. But by all means, RUN HAPPY. As luck would have it, I already have the t-shirt!
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