MAF heart rate test #1

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As I said yesterday, I decided to do my MAF (maximum aerobic function) heart rate test today at the track. I'm really glad I ended up doing my long run yesterday, because today's weather wasn't quite as perfect as yesterday's to run--but it was still very nice for July!To do the test, you just run 3-5 miles, preferably on a track, and keep your heart rate in the MAF zone (for me, that's 138-148). You keep track of each mile split, and each mile will most likely be slower than the last. . . .

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