Phone in bed is not neutral
One of the easiest sleep upgrades is environmental: keep the phone out of bed before trying to optimize supplements.
- Source
- Kheirinejad et al.. Personal and Ubiquitous Computing. 2022. PMID 36405389.
- PubMed sourceStudy breakdown
- Honest limits
- This study can inform a sleep-routine experiment, but it cannot diagnose insomnia or guarantee that removing your phone will fix your sleep.