Two of the books that I’ve read in the last 6 month have referred to the same study by a team lead by Jeremy Morris in 1949 to 1952.
Morris was interested in the connection between cardiovascular disease and physical activity. The link between exercise had been a long-held popular view, but there was little data to support it. On his daily commute in post war Britain, where money for research was scarce, Morris noticed a perfect sample for an experiment in the two people who operated the famous London double-decker buses on which he travelled – the driver and the conductor.
The driver with a mostly sedentary working life, the conductor on their feet most of the day, up and down stairs and from front to back. The difference in cardiovascular disease between the two cohorts was significant with drivers twice as likely to experience a heart-attack as the conductors. Neither of these roles required breathless physical exertion, the difference was between sitting all day and walking about all day.
Since the 1940’s the population in the west has moved from active jobs to sedentary ones. We may not be driving buses, our vehicles are apps, our steering wheels are screens, mice and keyboards.
Sitting all day is killing us, and it’s not just our cardiovascular system that is suffering, extended sitting is linked to a whole cluster of conditions. The recommended counter measure to these issues is exercise, in particular, walking.
Speaking personally, I can’t say that I can directly attribute any particular aspect of my physical well-being to regular walking, but I do feel the difference between active days and sedentary days. On active days I am less stiff, my brain is more alert, I sleep better, I feel less stressed, my posture is better, I am more creative, I am more motivated, my mood is better, I breathe better, in short I feel better.
One thing I’m not doing is walking to burn calories. While walking gives a reasonably good return on energy burnt, I’m more interested in the broader benefit to my overall well-being.
There’s still some debate about how much walking is enough walking, but for me I’m not sure that’s the right question. It appears that the 10,000 steps movement was created as a marketing event in Japan with no scientific research to support it. For me the question that I’m asking myself is how I build in as much activity as possible; can this meeting be done as a walking meeting? Can I take this call while I go for a walk? Even if I need to be near a screen for this discussion can I stand? Can I park my car away from the office door to make me walk in? I find it interesting that as a society we still regard these approaches as a bit weird.
Another question I ponder is which type of walking is best for me? In this regard it appears that we have to walk in a way that increases our breathing and heart rate. A number of people reference that phrase “you can still talk, but you can’t sing”. I rarely amble anywhere, but I don’t speed walk either. Perhaps I should be a bit more exerting as I walk, or perhaps I should just do more walking.
My morning walking routine has made a significant different to the amount of walking that I do, sadly it doesn’t stop me from sitting at a desk for 10 hours at a time occasionally. Most of the time this is broken by a lunchtime walk, whilst this walk does do something for me physically I find that it’s primary benefit is to my mind, perhaps that’s a subject for another day.
Header Image: Seathwaite Valley on the way back to the car after a fabulous day walking.