The ex-Blue Peter host, 36, is famous for her bravery in taking on challenges, such as walking a tightrope across Battersea Power Station, running a 78-mile ultra marathon and becoming the first person to use a bike to help reach the South Pole.
Helen, who has two sons with rugby player husband Richie Myler, will next be seen on Celebrity SAS: Who Dares Wins, but admits she finds challenges tougher these days.She said: "I think people think I'm a kayaker or a high wire walker, and I'm not.
I'm just someone who made telly programmes about doing that and had a go and got through it."I think I came into this feeling quite a bit of pressure - like I had to be good because people would expect me to be able to do it.
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