'When you are climbing well the fear is not there,' he explained.
'It is something that you know you can do, something that should pose you no apparent difficulties.
'Yes, there are moments when you question yourself, moments when you have to pull yourself together.
'Doubts can creep in anywhere, but with climbing you can just stop and pause and recover yourself, it is a normal part of climbing.
'Climbing is different to other gravity assisted sports like snow boarding or skydiving.
'With those the impulse to stop is removed by the speed of your descent.
'With climbing it is a process that requires you to constantly make the move, to travel upwards.
'Climbing is a deeper commitment.'
No fear: Free climber Alex Honnold re-enacts his ropeless ascent of the 2,500ft north-west face of the Half Done in Yosemite National Park.