To catch some ZZZZ's means to get some sleep. According to The Facts on File Encyclopedia of Word and Phrase Origins
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| An example of 'Z' indicating sleep - note the final panel. |
Though I am no longer dosing with medication at odd hours, I still have bouts of fatigue that just demand that I am frequently dozing at odd hours. I absolutely refuse to take any sleep aids. One doctor recommended (and was rather upset when I refused) that I do so in order to restore a more normal sleep schedule. I just didn't think that I needed any sort of pharmaceutical assistance with it. The last thing that I want to do it to become dependent on a drug for something as natural as sleep. The further recommendation to take a stimulant in the morning so that I could stay awake through the day and 'would be tired at an appropriate time' cemented my decision to avoid drug-assisted sleep.

