How has your sleep quality been lately? I know that if my sleep is hosed, my digestion is too - gets waaayy slow. Which stinks because that, in turn, worsens my sleep.
I think I have discovered something though.. With the current state of my digestion, if I have carbs as part of my breakfast, my sleep that night won't be good. Starchy things seem to be slightly better. Fruit is almost sure to make me wake up after ~4 hours of sleep. 20 hours later. My theory is that I have some place in the system that's irritated or somehow infected. The sugary thing gets to that place about 20 hours later, and causes some kind of disturbance - maybe producing methane or alcohol through fermentation - which maybe my brain doesn't like. Consuming fruit or starch later in the day doesn't seem impact my sleep.
If I don't have carbs at breakfast, my sleep that night seems pretty solid, and then my digestion seems happy.
The theory depends on the serial nature of digestion. And hence, latency in response. Other people might have different biome, and different irritation/inflamation/infection localization, or different timing, so their timing could be different.
I've been playing with this for several weeks and it seems to continue to be tracking pretty consistently. I'm thinking of writing it up for discussion in the Nutrition section..