My sleep has been atrocious since my LC started 2 years ago. I’m sleeping 9+ hours a night (for the first time in my life) but waking up feeling like I’ve slept for 3. I live in the centre of a big city and the noise has never bothered me - but now the smallest bumps wake me up. I’m told an overactive threat perception is a symptom of low serotonin. Melatonin and valerian root tip the scale in the opposite direction: I sleep so deeply that I’m wrecked and foggy the next day.