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1st August 2019
07:43pm BST

"I didn't feel right as soon as I woke up. First of all, my legs felt achy and sore. What's more, I couldn't bend them," Tang said.
"Afterwards, I went to the toilet and saw my urine was as dark as tea."
She went to a local hospital in Chongqing with her boyfriend and was transferred to the city's Emergency Medical Centre.
Tang was found to be suffering from a syndrome called rhabdomyolysis.
It occurs when muscle fibres break down and release their contents into the bloodstream.
Her level of myoglobin, a protein in the blood, was at 3,833. In a healthy person to should be at between 70 and 80.
She remained in hospital for ten days while she recovered from the potentially fatal condition. Tang's friend who had also completed the challenge went to hospital with the same symptoms and was diagnosed with rhabdomyolysis too.Explore more on these topics: