Including the studies that found nothingFree guidesProducts with the evidence attachedFree researchSlow down how fast you ageFree knowledge for everyone
Kratos Natural

Sleep

The night itself: what wrecks it, what fixes it, and what is only sold as fixing it.

1 analysis

Is your phone next to your bed ruining your sleep? Not the radiation

· 6 min read · 7 sources

Is your phone next to your bed ruining your sleep? Not the radiation

The radiation has been measured in thousands of people and nothing turns up. The device does turn up, and almost all of it is the half hour you spend holding it in bed.

Read article

Still to be written

Rhythm & timing · Sleep quality

Guides

Sleep

A man asleep on his side in a dark bedroom, one hand loose on the sheet in front of him. Beside the bed a small lamp gives off warm light, next to a glass of water and a plant, and the night is behind the window.

Sleep

Why regularity beats duration, what one short week does to your metabolism, and the four things that actually decide how you sleep tonight.

Free

Read

See all the research

Free longevity guide

Kratos Weekly lands in your inbox every Monday to start your week with: the latest analysis of that week's research, a recipe, a workout, a song with an explanation, a poem, and whatever else is worth passing on.

We store your email address to send the newsletter. Unsubscribe in one click, any time.