I wonder how physically taxing playing around on a trails bike is. I was bush hogging a section of my dads land and noticed a lot of boulders you could play on. From Small Glacial erratics about the size of a vw bug on down. He had 70 acres and i bet i could string together a pretty good vintage trials course with a couple of hairy glacial erratics thrown in. How does the physical exertion compare to laps on an mx track or harescramble??
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