A few days ago (Tuesday night) I slept unusually well, presumably because Tuesday day had been unusual in some way. I made a list of nine possible reasons.
Today I realized I’d forgotten something: 10. Stood on one foot more than usual. To pass the time while looking at my face in the mirror I had stood on one foot while stretching the other leg, pulling my foot up behind me. I was curious how long I could do this so I did a few trials with each leg where I did it until it became too painful. I lasted about 2 minutes on one leg and 2.5 minutes on the other.
This might seem trivial — and I forgot about it. But standing on one foot continuously for a relatively long time surely stressed my leg muscles much more than usual. Previous research convinced me that standing many hours improves sleep. Maybe this “extreme standing” produces the same hormonal effects in a few minutes as normal standing does in ten hours. That would be wonderful!