I concur. If I don't get at least seven, eight hours of sleep the day before, I find myself staring at the screen blearily the next day (at work) or succumbing to a mid-day nap (if the next day isn't work day).
Funny, when I am tired I nap especially on work days. Playing in the park with my little girl tired is less enjoyable but sitting in front of the computer after lunch when I am dead tired is a complete waste of time.
Drink a cup of coffee, sleep for 15 minutes and you will be able to work much better. 15 minutes is nothing on a tired afternoon. Just cut out the HN afterwards and you don't even have to feel guilty if you do it on the clock. In fact you just gave your employer 3:45 hours of productive time instead of 4 hours of wasting your salary for him.
