I have been thinking (but it hasn't gone past the thought stage) of setting a 90 min timer and making sure to do simple calisthenics at that interval. By calis

I have been thinking (but it hasn't gone past the thought stage) of setting a 90 min timer and making sure to do simple calisthenics at that interval. By calisthenics, I mean the kind of thing you see older Chinese men and women doing in the morning around Columbus park in Chinatown NYC (probably not the only place on god's-green-earth that this happens...) I have also thought there might be a hidden benefit in smoker's breaks in that one gets up, moves around and changes context for a bit. (And yes I know - forcibly introduce all kinds of poisons into the system.) I don't know if it is just sitting that is at issue or if it is to have your muscles in one set position for a long time. Perhaps sentries, mimes and others who must stand still for long periods suffer from the same issue. As I understand it - and this was gleaned from a brief scan of an NYTimes article. People who remain in a stationary sitting position for more than x hours a day are more prone to certain cardio-vascular issues associated with a sedentary lifestyle EVEN IF they regularly exercise. I would imagine simply standing would be better for you but I feel like the real point is to do something that circulates blood and lymph through your system multiple times a day. One of the 'use cases' that intrigues me are monks who meditate for long periods. I wonder if they suffer a greater incidence of blood clots and heart disease, etc. I would be surprised if they do... But, I am in no way an expert nor even an amateur physiologist and with diet and exercise I am prone to believing half digested notions (think xkcd 882 and 903). To misappropriate Pascal's wager. I can't see how it would hurt to do something 'non-sitting' every 90 mins or so.