When you were a kid, you only ate when you were hungry. Everyone said you ate like a bird until you became a teenager. Then you couldn't eat enough. By the time you hit your 30s you stopped listening to your stomach and started listening to your eyes. But you were working out enough to keep off unwanted pounds. But now you're starting to see the effects of eating too many calories. So how can you avoid age-related weight gain? By keeping these three age-appropriate tips in mind the next time you decide to grab your favorite fattening treat. 1. Age Changes Everything You may feel like a teenager, but when you're out of your teens and into your 20s, 30s, 40s, and beyond, your body tells a different story. Whether you'll admit it or not, you realize that you can't move quite as quick in your 50s as you could in your 20s. Likewise, your body can't burn through calories like it could a few years ago. With that in mind, the need to curb your calorie intake as ...