We asked top celebrity trainers one question: is there any food item you won't eat and recommend your clients avoid too? What we ended up with was a wide variety of answers, and while many of these off-limits foods seemed to make everyone's lists, there were a few answers that surprised us. Keep reading to see which foods celebrity trainers like Harley Pasternak, Jackie Warner, and Tara Stiles keep out of their kitchen, and then vote on whether or not you agree.
Teddy Bass: Refined Sugar
In addition to processed foods, Teddy Bass is big on steering clear of refined sugars. Our bodies desire fresh, organic foods for energy and fuel, he says. Once you load up on the proper foods, you'll be primed for Teddy's arm workout !
Tara Stiles: Alcohol
Want to erase a few years from your face? Stop with the fancy cocktails, says yogini Tara Stiles: "No one wants to hear this one, but if you want your body to operate optimally and look fantastic — and younger — avoid alcohol." Given that Tara works closely with Brooklyn Decker, this advice is clearly working! When it comes to weight loss, giving up alcohol is a must for Tim Rich, personal trainer with Crunch gym. Tim says alcohol is nothing but "empty calories" and suggests that those looking to lose a few pounds should ditch drinking for 21 days; after that, limit drinks to a few per week. Tim says he only drinks "a few beers a month."
David Kirsch: Fried Foods
David is a firm believer in steering clear of fried, fatty foods — of course, what sometimes tastes the best is the worst for you. Trainer Jonathan Ross agrees  and says fried foods are something he almost always steers clear of, saying they're "completely destructive to the body." Fried foods are widely available (and cheap), making them hard to steer clear of, but the amount of trans fat they contain should be enough to scare anyone, he says.
Jackie Warner: Yogurt
Jackie Warner says that if you're looking to lose weight, "get away from yogurt completely ." For Jackie, most yogurts on the market are filled with sugar — her number one food vice  and the reason "people are heavy and sick in this country." While we agree with Jackie that many of the yogurts on the market are brimming with sugar, Greek yogurt is a must in our book!
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Harley Pasternak: Grapes and Bananas
Two foods noticeably missing from celeb trainer Harley Pasternak's 5-Factor Diet are grapes and bananas. Harley, who counts Katy Perry  and Lady Gaga  as clients, says, "No one is going to live a shorter life if they have bananas or grapes," but he recommends that his clients choose healthier fruits . "I tell my clients to stick to fruits that either have edible skin, edible seeds, or citrus — bananas do not have edible skin, nor do they have edible seeds really, nor is it citrus. Most of the fiber and nutrients that are in a fruit are in a fruit's skin. A banana is just the densest piece of fruit that you can put in your body, and since it doesn't have much fiber, it won't keep you full." As for grapes? "Grapes have a special sugar in them called dextrose, which is the highest glycemic sugar that you can possibly put in your body."
Jeanette Jenkins, Jackie Warner, and Valerie Waters: Processed Foods, Especially Refined Carbs
This was a big one for celebrity trainers Jeanette Jenkins, Jackie Warner, and Valerie Waters. Valerie, who has worked with Jessica Biel , sticks to the mantra  "if a food item has ingredients you don't recognize or can't pronounce, you probably shouldn't eat it." Jackie says  that "everyone has to understand that bread, crackers, croutons, things like that, that's sugar. As soon as it's in your system, it processes straight to sugar then straight to fat." Jeanette, trainer to Kelly Rowland, steers clear of processed foods, because they "create inflammation in the body and increase the risk of disease."
Jarett Del Bene: Margarine
Jarrett Del Bene, best known for working with The Hills alumnae Lauren Conrad  and Audrina Patridge , says that margarine is number one on his off-limits list: "It's loaded with empty calories and is packed with trans fat, which is the worst fat to consume."
Steve Moyer and Yumi Lee: It's Not What You Eat; It's How Much
While trainer Steve Moyer is against eating trans fat, he follows the rule of moderation — eat too much of anything, and the weight will come. Regardless, he feels strongly that the quality of food should generally be healthy.
Yumi Lee, who works closely with Jessica Alba , feels the same and says her client follows the 80/20 rule to maintain a healthy weight . "You can't be 100 percent all of the time, but you can be 80 percent all of the time," says Yumi.
RELATED: Food Nutritionists Won't Eat 
John Damon: All Soda, Even Diet
YogaTone trainer Andrea Cirignano; Stephania Greco, a personal trainer and group fitness instructor with 24 Hour Fitness; and celebrity trainer John Damon, who works with Whitney Port  and Kristin Cavallari , say that soda should be eliminated from everyone's diets — this includes diet soda. For John, soda just doesn't make sense: "It has no redeeming qualities." We couldn't agree with them more. Drinking soda has been linked to several health issues  like dental decay, bone loss, and hypertension. It's also loaded with sugar — not a good thing for any healthy diet. Diet soda doesn't fare much better: studies link the consumption of diet soda to both weight gain and stroke risk.
David Kirsch and Valerie Waters: Gluten
Famous for helping Heidi Klum  bounce back postbaby, David Kirsch stays away from gluten in processed foods: "I try to steer clear of gluten as much as possible — it's awfully bloating." Valerie Waters also steers clear of certain gluten-filled foods like pancakes, waffles, muffins, and most cereals. Says Valerie, "Those foods will not only make me fat, they make me want to sleep."