"day-night reversal"

Tossing and Turning Every Night? Liver Heat May Be Causing Your Insomnia

Did you spend last night tossing and turning, simply watching the clock? Do you drift off only to wake repeatedly, feeling even more tired in the morning rather than refreshed? Beyond ordinary trouble sleeping, if you feel a tight, anxious sensation as if a hot fireball is trapped inside your body, it might be a signal from your liver.