Sleep regularity—consistent sleep/wake timing—is increasingly tied to major outcomes. A large objective‑data cohort found sleep regularity was a stronger predictor of all‑cause mortality risk than sleep duration.
Try this (2-week protocol):
- Pick a wake time you can keep 6–7 days/week
- Allow bedtime to drift only within a small range
- If you “mess up,” reset with wake time (not sleeping in all day)