If you think your job gives you a headache, spare a thought for stuntman Li Xin.
The 47-year-old spends his days balancing on his head - on top of a spike.
The full weight of his 10st 7lb body bears down on the spike, putting intense pressure on his skull.
Li, from China, has been practising the stunt for more than 20 years.
He can hold the pose with his legs up against a bar for more than 10 seconds - far longer than most people would be able to do a simple headstand.
And he is left with just a small indentation on his head afterwards.
He was photographed showing off his skills at an event in Nanning, China.
