HealthA better understanding of our hormones and sleep could improve both The hormonal changes of puberty, the menstrual cycle and menopause can all affect our sleep, but there are also subtler ways that hormones and sleep interact Features
LifeWild cavefish can somehow survive with almost no sleep at all Several populations of Mexican tetra fish that live in darkness have independently evolved to need hardly any sleep, but the reason why is a mystery ¿ìè¶ÌÊÓÆµ