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The 90-90-30-30: Obeying Your Ultradian Rhythms
Research shows that our bodies obey what are known as ultradian rhythms: ninety-minute periods of focus at the end of which we cease to operate at our highest ability.

Joel Mattern
Apr 166 min read
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3 Out of 4 is Winning: Reflections on my First Three Quarters as a Solopreneur
Going into business as a solopreneur can be intimidating. Here are some things I’ve discovered over the last nine months of my journey.

Joel Mattern
Aug 1, 20243 min read
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