[jaxn]

I have been training for a marathon while doing a startup. It is a substantial time commitment each week and while you might think running would be a great time to ponder startup problems, I tend to focus completely on the run. This break also let's me come back more efficient and more energetic.

[asknemo]

I believe our cases strikes a counter-intuitive point about what constitutes 'rest': despite the fact a distractive teaching job or marathon training can be taxing mentally and/or physically, they have shown to be good type of 'rest' for the entrepreneur. Strange creatures we are.

[joelg87]

Absolutely. I think the word "renewal" is probably better then. I used both in the article, but "renewal" really makes sense.