To follow up, my first sleep experiment with the Zeo was using melatonin on/off; the results seem to confirm my 1-hour rule of thumb: http://www.gwern.net/Zeo#melatonin-analysis
To follow up, my first sleep experiment with the Zeo was using melatonin on/off; the results seem to confirm my 1-hour rule of thumb: http://www.gwern.net/Zeo#melatonin-analysis