Caffeine...

My real problem is that my normal daily cycle is about 23 hours. So the last hour or two before going to sleep is a zero for any purpose. So I���m always tempted to just go to bed, and hope I will have extra energy to recoup the following morning. And so I wake up too early and find myself suffering from bio rhythm upset.

I do not know what to do to get out of this���except for drinking lots of coffee in the evening. But I want to preserve the effect of coffee on my attention span for serious emergencies.

I am stuck...