A healthy snack for pre-workout fuel should be balanced with carbohydrates for energy and a moderate amount of protein for muscle support. Ideally, it should consist of whole food sources like fruits, nuts, or yogurt. For instance, a combination of a banana and a tablespoon of almond butter or Greek yogurt and berries provides quick-digesting carbohydrates and essential nutrients. Avoiding heavy or high-fat foods before workouts is important to prevent gastrointestinal discomfort. Proper timing is essential; consuming the snack 30-60 minutes prior can optimize energy levels for the workout.