A woman says she's a real-life 'Sleeping Beauty' thanks to a rare disorder that sees her nap for up to 22 hours a day.
Joanna Cox, 38, who once slept for four days without waking up, was diagnosed with idiopathic hypersomnia after years of excessive sleeping and struggling to stay awake during the day.
The rare condition leaves sufferers with extreme daytime sleepiness - often resulting in struggles to wake up and feeling "unrested" and "mentally foggy".
