Is it really good for your back or is it some kind of yet again gimmick to make people's working hours more uncomfortable than it needs to be? A few years ago people used to sit on exercise balls all day, now that is gone. I wonder this one is also a fad
Is it really good for your back or is it some kind of yet again gimmick to make people's working hours more uncomfortable than it needs to be?
A few years ago people used to sit on exercise balls all day, now that is gone. I wonder this one is also a fad