Some people are genetically built to require less sleep than the rest of us. Albert Joseph Moore / Public Domain Everyone has heard that it’s vital to get seven to nine hours of sleep a night, a ...

The factors that govern the timing and duration of sleep and wakefulness continue to be a focal point of vigorous research within the scientific community. Nearly four decades ago, the two-process ...

In a paper published in npj Biological Timing and Sleep, researchers analyzed the mathematical structure of the two-process model (2PM) of sleep regulation, which was first proposed in the 1980s. The ...

Everyone has heard that it’s vital to get seven to nine hours of sleep a night, a recommendation repeated so often it has become gospel. Get anything less, and you are more likely to suffer from poor ...

The 2PM explains how our sleep patterns are shaped by two factors - a pressure to sleep that builds the longer we are awake and diminishes during sleep, and the near 24-hour rhythm of our internal ...

Wonder why babies nap on some days but not on others? Or why older people wake up earlier? Mathematical modelling of sleep regulation provides some surprising answers to these and other questions, ...