They asked curious questions :-)
I mainly relayed what blob had reported of his polyphasic sleep experiment during the Berlin meetup. And I tried to summarize what I knew about polyphasic sleep from the links and LW in general.
I also relayed that my second oldes son (8) by himself developed strongly segmented sleep with siesta during winter but fell back into mostly normal sleep after two weeks.
Review of our LessWrong Hamburg Meetup - Diet
After I was approched a few times about another meetup I scheduled it on short notice and six of us met yesterday evening at my place.
Summary
It was an mostly unstructured talk where we discussed diet from different angles and a few other tangential topics. I also reported from my participation in the LW Berlin Meetup a few weeks ago (which led to a side-track about polyphasic sleep).
We discussed the benefits and risks of misc. dietary recommendations and seemed to agree on most points, most of which coincide with those discussed on LW before:
Links about polyphasic sleep:
Other LW Hamburg Meetup reviews