Ultradian rhythms and how they can make you a happier person

To always be happy you need to get enough sleep. Photo: Filepic

A structured schedule with established meal times and, more importantly, early bedtime could improve quality of life and could even help head off mental illness, says study. 

It's about more than obeying the circadian clock – the internal 24-hour timer that controls our sleep-wake cycle – for the new study by Douglas Mental Health University Institute cites evidence that daily activity is governed by four-hour ultradian rhythms.