I've tried a bi-phasic sleep cycle (2 short sleep cycles; 3-4 hours a "day" each time, with a 3-6 hour wake cycle in between) for a few weeks. It worked well e

I've tried a bi-phasic sleep cycle (2 short sleep cycles; 3-4 hours a "day" each time, with a 3-6 hour wake cycle in between) for a few weeks. It worked well enough for me, but with a 10 year old at home, I just couldn't make the timing work out. I'm one that needs at least 8 hours a night; 9 is better.