Una Healy has claimed she has suffered with ‘nightmares’ and ‘aftershocks’ since filming Celebrity Bear Hunt. The 43-year-old pop star, who rose to fame in The Saturdays, has opened up on the PTSD she’s dealt with in the months after working on the grueling new Netflix show hailed ‘I’m A Celebrity on steroids’.

Twelve celebrities try to avoid going in the "Bear Pit," where Grylls hunts them as they try to navigate rough jungle terrain.