[sophacles]

So were cigarettes (which were even touted as a healthy thing for a period of time, and later found to be harmful). The point being: lots of thing are invented for a reason - but is that reason valid? Does it lead to secondary effects that outweigh the benefits?

[bshimmin]

Are you really comparing chairs to cigarettes? I'm not really sure that supports your point.

Snark aside, it seems to me that sitting down a lot is perhaps a contributing part of a lifestyle that probably isn't very healthy (not getting much exercise, not seeing much sunlight, etc). But it seems far from conclusive that replacing sitting down with standing up is really much of a solution for many people.