I've found I can hack this -slightly- if I get up early, knock out five hours of work, goof off for a few hours, eat a good meal, maybe throw a nap in there, an

I've found I can hack this -slightly- if I get up early, knock out five hours of work, goof off for a few hours, eat a good meal, maybe throw a nap in there, and then come back for another 5 hour stretch. But I've really only gained 2-3 hours over one 7-8 session. 12 or 16 hours is completely unsustainable over more than 2-3 days.