There has been a lot of work on the way in which surgeon's are affected by tiredness - and the whole medical workforce can probably relate to their experience.

But there's a difference between tiredness and fatigue, and that difference might be important in understanding what's happening in your own life.

Dale Whelehan is a physiotherapist, and PhD candidate at Trinity college Dublin, where he is investigating behavioural psychology and the effect of tiredness and fatigue on surgeons - in this podcast he describes how he thinks about those two things, what we know about the effect on wellbeing, and some strategies which might help manage them.