John Barrowman vomited as he quit Celebrity SAS: Who Dares Wins after 32 minutes during the first episode on Sunday, 22 September.
The Doctor Who actor, 57, joined stars such as Strictly Come Dancing contestant Pete Wicks and Boris Johnson’s sister Rachel to take part in gruelling SAS winter warfare training in the south islands of New Zealand.
He declared “I’m done” after throwing up during the first challenge.
Speaking to The Sun afterwards, Barrowman said his vomiting was due to being “made to eat vile tofu” before the task.
“I would never eat tofu in my life, but you’re so hungry, you just eat it,” he added.