[murukesh_s]

> and others where I really just can't get into the zone to do much of anything at all

Have you checked your sleep pattern when this happens? I have noticed if I did not get enough sleep (Because I was in a flow or anything else), it will catch up with me the next day. Can't concentrate no matter what until I get some rest again.

[peterkelly]

Oh yeah, definitely. If I don't get enough sleep, the next day is completely fucked. I'd say a good night's sleep is the single most important factor in ensuring I'm productive. It's something I struggle a lot to get right, especially when I'm on a roll in a late night coding binge but know I'm going to pay for it the next day.