AFTER 40 / THE EVIDENCE EDIT
Better sleep and more energy: start with the cause
A guide to insomnia, sleep apnea, fatigue and interpreting wearable insights.
Established treatment + diagnostic contextUpdated October 2026 · Educational summary · Clinical review not yet completed
Sleep isn't one condition
Difficulty falling asleep, repeated waking, excessive sleepiness and post-exertional symptom worsening can have different causes and require different plans.
What works for chronic insomnia
Cognitive behavioral therapy for insomnia (CBT-I) is a recommended first-line treatment for chronic insomnia. Discuss possible sleep apnea if there is snoring, gasping or persistent daytime sleepiness.
Track without over-interpreting
Wearables can help show personal patterns, but their stages and recovery scores are estimates and not substitutes for diagnostic tests.
When fatigue needs evaluation
Sleep deprivation, medication effects, anemia, thyroid issues, mood disorders, and other conditions may contribute. For post-exertional malaise, pacing differs from generic exercise progression.
Questions to bring to your clinician
- Do my symptoms suggest insomnia, apnea, or another sleep disorder?
- Would CBT-I or a sleep study be appropriate?
- Should other causes of persistent fatigue be evaluated?
- Which habits can I change and measure realistically?