We should sit up straight whenever possible, right? Research suggests that may not be the case. According to a 2006 study by Canadian and Scottish researchers, sitting at a 90-degree angle puts unnecessary strain on your spine. The researchers found that the least harmful way to sit at work was angled back at about 135 degrees. In the study, spinal disk movement was most pronounced when participants sat upright at 90 degrees, even moreso than when they hunched forward. The 135-degree "slouch" position, with feet placed on the floor, saw the least disk movement, meaning that less strain was placed on the spinal disks and associated muscles and tendons. We've collected some awesome videos on this topic. Watch them now to learn more.