Musculoskeletal researcher Dr. Jack Callaghan has a low opinion of the public alarm surrounding sitting at work. \u201cIt\u2019s amazing what an impact the media has had on this. Ten years ago, nobody cared about sitting in the office, and now all of a sudden it\u2019s this massive thing,\u201d he says. When asked if sitting is bad for you, he concurs that the evidence points to that. \u201cWhere it starts to fall apart,\u201d he says, \u201cis where you divide out work sitting time and total sitting time. This \u2018sitting at work is killing you\u2019 thing \u2014 there\u2019s not a lot of evidence for that. It\u2019s more total sitting. It\u2019s more a lifestyle comment. Do you sit all day at work? Do you drive your car? Do you sit at home on the couch?\u201d Callaghan states that it\u2019s fine to sit for around 10 hours a day total and up to eight hours at work. The maximum time you should spend standing at work, however, is only four hours because standing too long is actually more detrimental to your health. The negative impacts of prolonged standing range from varicose veins to cardiovascular disease to musculoskeletal disorders (MSDs) like back pain. \u201cThe association of standing and negative MSD outcomes is far greater than the association of sitting and back pain for example \u2026 We don\u2019t want to just blindly substitute and have people standing all day,\u201d Callaghan says.