We are the only animal on the planet that sleeps once a day! Why is that, and how's that working out for us?
How could you beter manage your energy managment during the working day?
Watching TV or using computers, tablets or smartphones after dark may cause sleep loss and resultant health problems, a leading doctor has warned.
Peering at brightly lit screens at night disrupts the body's natural rhythms and raises the risk of medical conditions linked to poor sleep, including obesity, heart disease, strokes and depression, he said.
Artificial light can prevent a good night's rest by dampening down the activity of neurons that bring on sleep, activating those for wakefulness, and suppressing the sleep hormone, melatonin. Together these push back the natural clock that controls the body's sleep-wake cycle.
https://www.theguardian.com/science/2013/may/22/peering-bright-screens-dark...