premise: Transport is my biggest problem in this job . Although it 's 30 minutes by car , that 's really the only way to get there . It took me 3.5 hours to get home , because I had to walk 3 miles over fields , then get a bus , then a train . But that was fine , apart from my vague fear that I 'd get shot by a farmer for trespassing ( in Herefordshire , this is a very real concern ) . Why do you choose walk to the start of your commute ?
hypothesis: I like the exercise I get from walking part of the way before the bus stop