As anticipation builds for the longer days that follow this weekend’s switch to daylight savings time, the moment seemed ideal to turn to one of the nation’s leading circadian-rhythms researchers, UC ...

Our circadian cycle doesn’t just affect our sleeping and waking, but our motivations, mood, behaviour and alertness. Whether you are a lark or an owl, here’s how to recognise your own rhythm Sign up ...

For years, I was an inveterate early morning exerciser — the kind of person you'd spot trudging into the gym just after the doors were unlocked or running through the neighborhood when the coffee ...