I've started a new Biphasic sleep trial. I'm posting my progress over in the "polyphasic sleep log" thread here
My plan is to have a 90 minute nap around 7:00 PM, and a 4.5 hour core sleep from 02:00-06:00. I just started today with my nap, and my first core sleep will be tonight (or early tomorrow morning, to be precise). Anyone else thinking about trying biphasic sleep? Care to join me?