We all know what it feels like to have a bad night's sleep - and feel tired and irritable the next day. Sleep plays such an important role in recharging our minds and bodies – but what if, no matter how much sleep you had, you didn't wake rejuvenated the next day? In this episode, we're taking sleep disorders – everything from sleepwalking to problems getting to sleep in the first place. We’ll hear from Declan, a 24-year-old man with narcolepsy, and Dr Chelsie Rohrscheib, a sleep researcher at UQ's Queensland Brain Institute.