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.

This isn’t always insomnia — sometimes it’s simply a new rhythm.

The shift can become more noticeable when:

• A person retires
• Social interaction decreases
• Daily responsibilities lessen
• Evenings become quieter
• Without strong external cues, the body relies more heavily on its internal clock.
  
  ←PreviousNext→