![British triathlete and Olympic hopeful Vanessa Raw poses in the altitude tent she sleeps in at home in Kingston-upon-Thames, London, February 16, 2012. The altitude tent simulates high altitudes by maintaining low British triathlete and Olympic hopeful Vanessa Raw poses in the altitude tent she sleeps in at home in Kingston-upon-Thames, London, February 16, 2012. The altitude tent simulates high altitudes by maintaining low](https://l450v.alamy.com/450v/2cxeaet/british-triathlete-and-olympic-hopeful-vanessa-raw-poses-in-the-altitude-tent-she-sleeps-in-at-home-in-kingston-upon-thames-london-february-16-2012-the-altitude-tent-simulates-high-altitudes-by-maintaining-low-oxygen-concentrations-while-the-athlete-sleeps-raw-who-now-competes-fulltime-graduated-with-a-degree-in-fine-art-from-loughborough-university-in-june-2010-picture-taken-february-16-2012-reutersolivia-harris-britain-tags-sport-athletics-olympics-2cxeaet.jpg)
British triathlete and Olympic hopeful Vanessa Raw poses in the altitude tent she sleeps in at home in Kingston-upon-Thames, London, February 16, 2012. The altitude tent simulates high altitudes by maintaining low
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Training High: Endurance Sports and Hypoxic Altitude Training - Trail And Ultra RunningTrail And Ultra Running
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