Just stumbled upon this article today and found it quite useful and intersting for myself (given my lifestyle at least).A short summary would probably be: SItting is quite bad for your health if you do it a lot during the day and rarely get up. Even if you exercise, if you sit for long consecutive periods of time that's not gonna counteract that. Getting up once an hour for a short while would however.http://lifehacker.com/5879536/how-sitting-all-day-is-damaging-your-body-and-how-you-can-counteract-it