<aside> ⚠️ Mathew Walker responded in an underwhelming way after some guy wrote a essay critiquing his work. I still think that below findings are true. But his not transparent reaction gave me a feeling that some of his finding might not be replicable Replication Crisis

</aside>

Four things that deteriorate the quality of our sleep:

• irregularity (always go to bad at the same time)
• alcohol
• sleeping pills
• caffeine (caffeine digests for a very long time, some people who are slow caffeine metabolizers ( a specific gene mutation) shouldn't drink coffee at all, others should have last cup of coffee mid day the latest)
• Hide