Health

Menopausal night sweats linked with cognitive dysfunction

Experts frequently tout the value of a good night's sleep. However, a new study casts doubt on the value of sleep time suggesting that women who experience night sweats are more vulnerable to cognitive dysfunction as their ...

Health

Sleep interrupted: What's keeping us up at night?

One of the largest longitudinal studies to date examined evening consumption of alcohol, caffeine and nicotine among an African-American cohort and objectively measured sleep outcomes in their natural environments instead ...

Health

Shift and FIFO workers at high risk of fatigue

Almost all (97 percent) shift workers are unable to adjust their body clocks between day and night shifts and are missing out on quality sleep, it was reported at the Royal Perth Hospital Research Foundation's Pilbara Sleep ...

Diabetes

Shift work increases diabetes and heart disease risk

With over 20% of the population in industrial countries engaging shift work—in sectors such as healthcare and transportation—we urgently need to understand its health burden.

page 1 from 10

Night

Night or nighttime is the period of time when the sun is below the horizon. This occurs after dusk. The opposite of night is day (or "daytime" to distinguish it from "day" as used for a 24-hour period). The start and end times of night vary based on factors such as season, latitude, longitude and timezone.

At any given time, one side of the planet Earth is bathed in light from the Sun (the daytime) and the other side of the Earth is in the shadow caused by the Earth blocking the light of the sun. This shadow is what we call the darkness of night.

This text uses material from Wikipedia, licensed under CC BY-SA