I've been thinking about starting the Dymaxion sleep cycle myself, so your posts are very interesting. I have one major concern though. How can you get the right amounts of melatonin? To the best of my knowledge it's a pretty important hormone, and it's production peaks at night. Any light, even small amounts of it, can really slow it's production. If you were up and about all night, wouldn't the body's melatonin production come to a halt?