[klipt]

> sleep instantly when you lie down

The secret to this is lots of exercise (and maybe good sleep hygiene).

IME insomnia is mostly a result of being sedentary all day.

Never had insomnia when camping and hiking multiple hours each day.

[rakejake]

True. I'm not an insomniac or anything close and I exercise regularly. I think sleep hygiene and sleep posture (and breathing during sleep) are the last pieces of the puzzle. Still working on it.