Too much light in the room, not dark enough
Artificial light sources inhibit the body’s natural production of melatonin in evening
Blue light, EMF emitters (computer screens, phones, TV, games) “fool” your brain into thinking it’s daytime, keeping you awake
Stresses of all kinds raise blood cortisol (keeps your body and mind from relaxing)
Shift work, up late working, jet lag can all disrupt natural sleep patterns
Lifestyle and diet: alcohol, caffeine, energy drinks, eating a large meal late at night, indigestion
Low-carb diet (in evening, low-carb reduces serotonin, can prevent sleepiness)