Regardless of the pressure at work, it involves sitting down all day. Hence never really enjoyed sitting on a beach to relax, and would rather go on a monster bike ride. It is exercising the bits that don't normally get worked and want to, and allows the bits that have been stretched to relax.
Usually we turn up on holiday, I'm stressed and can't work out what food to buy, what to do and when. Wife forces me to take my son out on a long bike ride so that I am bearable.