The bit about the 3PM dip is not just about meridian cycles. Since I gave up carbohydrates, I haven't had that hypoglycaemic productivity dip at a predictable

The bit about the 3PM dip is not just about meridian cycles. Since I gave up carbohydrates, I haven't had that hypoglycaemic productivity dip at a predictable time after lunch. As a contractor, I've sat in different offices and witnessed those around me experience 'the dip', whereas I can now soldier on through the day from morning to evening with consistent alertness and focus levels. Oh, and creatine supplementation helped a lot, too. Another useful trick is to buy a blackout blind or window cover. I've managed to make my bedroom pitch black from the beginning to the end of my sleep cycle, and I know that my sleep is much better for it. It goes without saying that if the sun rises early where you live, and you happen to go to sleep late one night, it can be impossible to get the full 8 hours you want if the light starts streaming in before you've finished.