Getting that booty off the couch will mean less time eating junk food, according to a new study published in the Archives of Internal Medicine. Experts say small lifestyle changes may have a “domino effect” in helping people lose weight. Researchers from Northwestern University Feinberg School of Medicine randomly assigned 204 adults one of four different lifestyle treatments. The treatments included increasing fruit and vegetable intake and exercise, decreasing fat and sedentary leisure, decreasing fat and increasing exercise and increasing fruit and vegetable intake and decreasing sedentary behavior. When patients were asked to change one lifestyle behavior, it was easier for them to change others, as well, creating a snowball effect, according to the findings.