Summer is in full swing, and often at the center of warm-weather festivities are outdoor picnics, barbecues, and cook-outs. While these gatherings often feature menus with high-calorie foods, with a bit of mindfulness, you can still make healthy choices while enjoying all the fun with these tips: Make Minor Modifications Cheeseburgers are packed with hidden, and oftentimes unnecessary calories. Ranging from plain white to decedent brioche, hamburger buns add anywhere from 100-300 calories to your meal. A slice of American cheese is an additional 100 calories, which, after melting, doesn’t have a strong enough flavor profile to make it worth it’s while. And mayo is another 100 calories to boot.…