Wim Hof, 55, has broken 21 Guinness World Records including running a full marathon above the Arctic circle wearing only a pair of shorts.The father-of-five, from Sittard, Holland, also holds the record for having the longest ice bath.He stays immersed in blocks of ice for a spine-chilling one hour, 52 minutes and 42 seconds.Mr Hof said he can endure sub-zero temperatures as he has the ability to 'turn his own thermostat up' by using his mind.He said: 'I feel like I can control my own body as if I have a thermostat that I can adjust when I need to. The most challenging record was climbing Everest in just a pair of shorts.He stays immersed in blocks of ice for a spine-chilling one hour, 52 minutes and 42 seconds.Mr Hof said he can endure sub-zero temperatures as he has the ability to 'turn his own thermostat up' by using his mind.He said: 'I feel like I can control my own body as if I have a thermostat that I can adjust when I need to. The most challenging record was climbing Everest in just a pair of shorts.'Swimming beneath the ice and not finding the hole back was quite a frightening experience too.'But I'm confident enough because I know what my body can cope with.'Experts revealed during deep meditation, Mr Hof's brain is able to send messages to other parts of his body telling them to keep warm.In most other people, body temperatures would drop dangerously low but Mr Hof still believes people can control their body temperature by concentrating hard.Mr Hof previously swam more than 60 metres under ice wearing only goggles and a pair of shorts but admits the training beforehand makes the challenges 'pretty easy'.He added: 'It all requires a lot of focus as they are very challenging and therefore exciting to do, so it's all worthwhile in the long-term.(dailymail.co.uk)Bakudaily.az