This means you may not be waking because of stress or noise — your body simply isn’t receiving the same hormonal message to stay asleep.
Small environmental triggers can make this worse, such as:
- Streetlights outside
- Glowing electronic screens
- Illuminated clocks
- Hallway or bathroom lighting
- With age, we tend to become more sensitive to light and subtle disturbances.
2. Shifts in the internal clock (circadian rhythm)
Another common cause is a shift in the body’s internal timing system.
Many older adults feel sleepy earlier in the evening. If someone goes to bed at 9:00 p.m., their body may naturally complete its sleep cycle around 3:00 or 4:00 a.m.
