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I suspect that the causation is backwards here. Studies of highly driven people show that they tend to have naturally higher dopamine levels than less driven pe

I suspect that the causation is backwards here. Studies of highly driven people show that they tend to have naturally higher dopamine levels than less driven people (I'm grossly oversimplifying here, but anyway). In effect, they are on stimulants all the time - natural ones created by their own bodies. And that's going to create a correlation between productivity and early rising right there.

StavrosK 13y ago
How do stimulants relate to rising early? If anything, they might relate to needing less sleep, but that still only means you get up early if you go to sleep early.
- mistercow 13y ago
  >they might relate to needing less sleep, but that still only means you get up early if you go to sleep early. I think you might want to check your math there.
  - StavrosK 13y ago
    I did, it checks out.
    - mistercow 13y ago
      No it doesn't. I don't want to be mean, but this is really basic addition. If you need less sleep, you can get up earlier without going to sleep earlier.