Tag

Circadian rhythm

Page 2 of 4

Three road workers in orange high-visibility clothing and hard hats standing at a work site at night.

Shift work and health: what studies show for the heart, diabetes and sleep, and what remains unclear

Oct 2, 2026

A mug of dark drink beside a lit tablet, a small lamp and a pair of glasses on a wooden table at night.

Caffeine and sleep: how much sleep coffee costs, how long the effect lasts and why people differ

Oct 1, 2026

An older man napping on a sofa under a blanket, with a glass of water in the foreground.

Are naps good for you? What the research on daytime napping shows

Sep 29, 2026

An unmade bed beside a large window looking out on lit city buildings

Light at night went with a thicker, stiffer heart, in 11,071 UK Biobank adults with heart scans

Sep 23, 2026