Kate Garraway has given a heartbreaking update on her husband Derek Draper's health, revealing that he suffers from extreme fatigue and sleeps 20 hours a day.MORE: Kate Garraway's absence on Good Morning Britain explainedTalking with Dr Hilary about long COVID on Thursday's Good Morning Britain, the star said: "The fatigue that Derek has, I know he is an extreme case because he's got multiple organ challenges, but even some with some milder cases, you know Derek is sleeping 20 out of 24 hours a