Improving Stamina – Update No. 2

Update: I did this workout 2x this past week and got some decent results. This morning I ran at 10 mph for most of the working sets (6 of 8). The last two, I ran at 10.5 and 11 mph. I broke a sweat after my regular workout. I’ll report back with the 11.0 mph and see how that goes.

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