Before arriving each morning, he works out with a personal trainer or studies Mandarin, which he is learning in preparation for the trip to China.

NEWYORKER: The Face of Facebook

We have national parks to provide access to these kinds of areas, but that does mean that people will effectively go for a walk in the park without perhaps doing the preparation work, getting kitted up, learning the necessary skills.

BBC: 'You must prepare for the hills'