longevity

There's a strong link between caffeine consumption and sleep quality.

You will never master your sleep if you don't accept this fact.

For a good night's sleep, no caffeine should be consumed past noon.

Co-Founder at sablier.com, and open-source developer. I have a broad range of interests, including longevity, epistemology, physics, and psychology.

Let's also add alcohol, nicotine and weed (although many think otherwise).

Agree on alcohol and weed.

But not nicotine.

Nicotine != tobacco

Nicotine can be safely used as an occasional nootropic that doesn't impact sleep negatively:

Interesting! I didn't know nicotine was considered a nootropic. However, it looks like it's better to not take it before sleeping: https://www.sleepfoundation.org/physical-health/nicotine-and-sleep. I'm not sure about the reliability of this article though. I'd like to go into it.

Agree on alcohol and weed.

But not nicotine.

Nicotine != tobacco

Nicotine can be safely used as an occasional nootropic that doesn't impact sleep negatively:

https://www.youtube.com/watch?v=6EHE-hHg49k