Depending on the chair and your work. I do like to stand sometimes when on meetings or presentations. I have a chair that promotes movent on it, which is good

Depending on the chair and your work. I do like to stand sometimes when on meetings or presentations. I have a chair that promotes movent on it, which is good for changing the position and should be healthly. But i have never stood without any support (chair or stool) for a longer time on a table. When i'm writing or coding i must sit, standing or leaning are really bad for me when i need to concentrate.