As one who learned the hard way with my back seizing up years ago due to slouching and breaking every rule of ergonomics I offer this: * If you're going to sit

As one who learned the hard way with my back seizing up years ago due to slouching and breaking every rule of ergonomics I offer this: * If you're going to sit, sit upright. * Raise your monitor so that it is eye-level. Slouching down to look at your notebook will inevitably hurt you one day.