Exercise is only sleep inducing if it isn't done near bedtime. Laughter can also leave me awake for an entire night, and then the following, etc. Right now I've been in a period of sleep, but it will end and then the long nights will appear again. It's a nuisance, for sure.
I think eating also has some connection, but I couldn't tell you exactly what. I don't like milk, but find that warm almost milk (almond, for example but it could be any type), vanilla & a small amt. of sugar will help me fall asleep. The rest is up to my body. I'll often wake up 2 hrs. later, but then I often have to urinate anyway.
I haven't been able to get answers at the sleep clinics (waste of time for me and countless others) and we all leave with prescriptions for trazodone, which doesn't work for me at all. For the most part, no sleep med works after the first night. I don't even bother any longer....at least I can't be accused of being addicted to them.
I've learned to live with this now....know it comes from the sleep center (close the brainstem, where I have had surgery) and know that a lot of us live with this problem. I used to exercise in the morning, but it's been awhile and I can't say that things were any better then. I wish......! Yours, Lenora.