When I started to develop severe neck pain and headaches last year, I visited a physiotherapist. After crunching away at my upper back and making worrying exclamations (‘Yikes! Whoa!’), she advised me that I needed to get back into a regular exercise routine. For the past several years, I just hadn’t been exercising. Each weekday I drove to work; on weekends I also tended to drive, rather than use public transport, ride my bike or walk to wherever I needed to go.