Sleep Professor Andrew Coogan talks about our body clocks, sleep patterns and time changes

Professor Andrew Coogan is a behavioural neuroscientist who specialises in the field of circadian rhythms, chronobiology and sleep.

He is the director of the Chronobiology and Sleep Research Laboratory at Maynooth University.

With the clocks moved back last week and many people feeling slightly off-kilter, the Joe Finnegan Show decided to seek Professor Coogan's expertise on the matter.