RELATED:  Never Drink This During a Heat Wave, Experts Warn. Chances are you’ve enjoyed a frothy smoothie after a workout to both cool you down and fill you up. However, experts say you should avoid smoothies after a workout. It’s important to remember that all smoothies are made differently, but for the most part, they’re not going to provide what you need. “Smoothies are high in vitamins and minerals, but that’s about all they have to offer. They’re low in fiber and have no protein and no complex carbs,” says fitness instructor nutritionist Carly James, PhD. Registered dietitian nutritionist Kristin Gillespie says that post-workout snacks should have a variety of macronutrients, including protein, fiber, and healthy fats in addition to carbohydrates. “Many smoothies are lacking in this balance, containing large amounts of carbohydrates and sugar with minimal other macronutrients present,” she explains. Although smoothies contain natural sugars from fruits, consuming any kind of sugary drink after a workout can throw off your post-workout energy levels, resulting in a crash. She advises that if you must have a smoothie after exercising, it should be “rich in protein and low in calories.” RELATED: If You Drink Your Coffee Like This, You May Be Increasing Your Cancer Risk, Study Says. Gillespie points out the obvious: It’s not wise for your post-exercise snack to have more calories than what you just burned. Personal trainer Rohan Arora agrees that you should avoid smoothies that will spike your calorie count right after a workout. He also notes that because smoothies often contain a mixture of different ingredients, you could end up with a distended stomach. “Bloating and gas issues are common for people who consume regular smoothies, which is exactly the opposite of what you want after your workout,” Arora says. Smoothies aren’t the only post-sweat snack you need to be wary of. Co-founder of RockBox Fitness and certified nutritionist Steve Halloran says pre-mixed post-workout shakes are “laden with processed ingredients to make them shelf-stable” and should also be avoided. Drinking caffeine or alcohol is also ill-advised, as it can exacerbate dehydration and hit you harder since your metabolism is higher post-workout.ae0fcc31ae342fd3a1346ebb1f342fcb James says anything that requires significant effort to digest should also be avoided, including fats, oils, and high-fiber foods. “They may be healthy in general, but after a workout, you want your body to focus on repairing itself, not digesting a challenging meal,” she notes. And Gillespie points out that high-fat foods—such as fried foods, oils, and fatty meats—slow down your metabolism, which is less than ideal after working out. RELATED: For more health content delivered straight to your inbox, sign up for our daily newsletter. Snacks that strike the right balance of protein, fiber, and carbohydrates can “help sustain energy levels over a longer period of time,” Gillespie says. She also notes that post-workout snacks can help to build muscle, but it’s hard to achieve that without consuming protein, so you want to make sure your snack has enough of it. “Bananas with peanut butter, cottage cheese with fruit, chocolate milk” all contain a healthy balance of carbohydrates and protein, as well as fiber and micronutrients that your body needs following a workout, she explains. Per Arora, eggs, sweet potatoes, chicken, and fish are good options for after a workout if you’re looking for a heartier meal. RELATED: Drinking One Glass of This a Day Slashes Your Heart Disease Risk, Study Says.