Exercise physiologist Tom Schwartz explains critical velocity training, the pace between threshold and VO₂ max that can boost speed, endurance, and economy. In the running world, there are lots of workout options to have at the ready if you want to get faster: race-pace repeats, tempo and threshold runs, and VO₂ max efforts. But there’s another option lots of runners tend to overlook. It’s called critica... [8268 chars]
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