He has broken his shoulder in Antarctica, drunk juice squeezed from elephant poo, eaten live fish in Alaska and slept inside the carcass of a camel, so it is little wonder Bear Grylls’ wife worries every time he goes to work. But while telly’s most adventurous star says Shara trusts him not to take too many risks with his life, he admits he would quit TV if she asked him to. The couple, who have been married since 2000 and have three kids together, are rarely seen on the showbiz circuit,