Will you make a New Year’s resolution to get to the gym more often in the hopes of slimming down? What are the chances you’ll succeed?  Many fitness professionals lament the fact that they watch gym clients faithfully working out several times a week without ever changing their bodies. Some of us are those very gym rats who might console ourselves by thinking that our bodies would be far worse off but for the burn. We tell ourselves that we would be obese if not for our dedication to a daily walking, running, swimming, spinning and lifting program. But is the very exercise that everyone knows you have to do, keeping some people fat? According to science writer Gary Taubes, when it comes to weight loss, the benefits of exercise are “elusive” at best. Writing in his book, “Why We Get Fat: And What to Do About It,” Taubes makes the …