"1) It ruins your neck."<p>In what way, by what mechanism, over what timescale and possibly, demonstrated significant in which study?<p>I've been using multiple monitors on my home computer since 2001 and at work since 2005 and I attribute my neck crunchiness to general physical atrophy due to aging and desk driving.<p>Usually people advocate movement, saying people weren't built to stay still for long periods, multiple monitors require head turning but not as much as walking requires leg join movements (and neck movements for that matter).<p>"because it doesn't cause neck trauma."<p>'Trauma' is a scarily strong way to describe "turning your head".