Emily Balcetis: Why some people find exercise harder than others

Why do some people struggle more than others to keep off the pounds? Social psychologist Emily Balcetis shows research that addresses one of the many factors: Vision. In an informative talk, she shows how when it comes to fitness, some people quite literally see the world differently from others — and offers a surprisingly simple solution to overcome these differences. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world’s leading thinkers and doers