Running can increase your appetite, so make sure you're fueling properly. No need to down a 500-calorie smoothie after your run if you've only run for 30 minutes (which burns about 300 calories). A small snack of carbs and protein, like three of these vegan protein balls, is perfect. Keep in mind that although you're running regularly, it doesn't give you the liberty to eat as much as you want or to eat junk, because you'll just end up gaining weight and undo all the good your running is doing.
Image Source: POPSUGAR Photography / Cera Hensley