A natural decline in melatonin with age.
Our sleep is guided by a key hormone: melatonin. It helps the body understand that it is time for deep sleep.
Over the years, its production naturally decreases. As a result, sleep becomes lighter and more fragmented. Around 2 or 3 a.m., its level can be low enough to trigger a spontaneous awakening.
Add to that a greater sensitivity to light (outdoor streetlight, indicator light on electronic device, screen left on…) and the brain can interpret these signals as the approach of morning.
Simple tip: completely darkening the room (closed shutters, blackout curtains) and avoiding screens for at least an hour before bedtime can really improve the quality of sleep.
