Victoria Pendleton pulls out of Everest bid after suffering oxygen deficiency

Former Olympic cyclist Victoria Pendleton has had to hit the brakes on her climb up Mount Everest because of health concerns."I am incredibly disappointed not to complete the challenge and frustrated as I feel in great physical condition and was moving swiftly and efficiently through the icefall and across the glacier.Pendleton and Fogle - along with mountaineer Kenton Cool - had taken on the challenge for the British Red Cross to raise awareness about the environmental challenges the 8,848 metr