While sitting is correlated with mortality, I don't think it's been proved that it causes it. I suspect the relation between the two is more complicated than that.
As far as stress free... Interacting directly with many customers can be a trying experience. I think it can be a lot more stressful than an office job for many people.
As far as stress free... Interacting directly with many customers can be a trying experience. I think it can be a lot more stressful than an office job for many people.