The article implies that this is some sort of replacement for meditation, yet meditation predates one cycle sleep. Anecdotally I've found that different people

The article implies that this is some sort of replacement for meditation, yet meditation predates one cycle sleep. Anecdotally I've found that different people need different amounts of sleep, but many people benefit sleeping sooner rather than later. Most people will strongly defend their late sleeping, that they've "tried early sleeping" and it's just not for them. Usually they haven't committed long enough for their body to get used to it. Personally I would rather wake early than stay up late to work on something. At least you're approaching the problem with a clear mind and well rested. Many hours are wasted in the night where people aren't thinking clearly, spinning their wheels on problems which could be solved with a different approach. This only gets worse with age. I'm sure I'll hear accounts of people who are "not morning people". A little exercise in the morning will wake you right up.