3 ms·

I think so, but couldn’t happiness be the cause of better sleep? Worried and anxious people don’t sleep very well.

• DennisP 7y ago
  Maybe both ways are true, making it a feedback loop in either direction.
  • graeme 7y ago
    This is certainly my anecdotal experience. I sleep worse when in poor health/stressed. But sleeping less makes me prone to poor health/stress.