Just a 3.75 mile run at a decent pace (29:30 something = 7:50 something miles). That’s what I needed for a “rest” day between gym efforts.

A lot of folks will tell me that I’m wasting my time running. That cardio is incredibly mode specific. Here’s what I know: The purpose of my training is to be able to skin up a mountain for about 30-40 minutes at a time. So, an aerobic effort of the same length with some incline is probably a good idea. Not perfect, but not useless either.

I do plenty of interval stuff in the gym (tomorrow is going to be killer). I know that there is a lot of research out there that strongly supports the use of interval training. However, I also know that very little of what passes as interval training in the gym or in a fitness setting is done at the necessary intensity or frequency to elicit the endurance gains found in a study setting. Likewise, the science has been done for short training periods (4-6 weeks). We don’t have hard evidence that these short-term results replicate over the long-term. (See Lyle McDonald’s discussion here for more on this). So that’s why I still run. Soon I hope to be doing all this running in my Five Fingers, but my lower leg and ankle strength isn’t there yet.

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