It is well known that, to be healthy in both mind and body, it is important to keep active. As Juvenal (55 – 138 AD) put it, Mens sana in corpore sano. These days there is plenty of advice on how to keep active. My personal preference is for active travel, as it is the easiest way to include regular physical exercise into your daily life. These days, when there is an app for everything, there are of course apps to help you lead a healthy life. One that recently caught my eye is the Human – Activity Tracker, not so much because of the slick graphics on their website (although those are very nice), but more because of the data it has collected and presented in the video below –



The thing that fascinates me about this is the way it shows us the different patterns of activity across different cities, for different modes of travel/activity. At this point it is necessary to add a caveat about the way that the data have been collected. This app is only available for the iPhone and therefore represents the activity of only a small section of the community, but it is never the less fascinating. See more visual data here, sadly Edinburgh is not one of the 30 cities listed.