Each month iVillage poses a different question to our Dream Team of experts. Here's what we asked this month: Should everyone have a workout/diet buddy? Or is codependent weight loss a recipe for disaster? Our experts weighed in with their points of view.

Stacy Berman, Trainer Having a workout partner is a great idea. Not only does she provide motivation and support, but she can also make the workouts more enjoyable. On their own, people often skip out on their workouts and say, "I'll start my diet on Monday." When they are doing it with someone, their sense of responsibility is much greater, and they're more likely to stick with it and work harder than they would on their own.

Lynn Grieger, RD, CDE It all depends on the buddy! We're more apt to stick to an exercise routine if we have a partner who depends on our showing up. When I was in college, there was simply no way I was going to drag my exhausted body out of bed at 6am for a run ‑- except my roomie would turn on the light and insist I join her. Having a diet partner can be helpful if it's a positive relationship where you encourage each other to stick to realistic goals. However, if your diet buddy constantly nags about your food choices, brags that she's lost more weight than you or suggests a Dunkin' Donuts stop after a Weight Watcher's meeting, find a new buddy! Focus on supporting each other in setting goals, figuring out how to promote healthier eating and celebrating each other's success (without food, of course!).