If you diet and exercise but aren't seeing too many returns on your weight loss, there are a few possibilities. One is that you're not eating as healthily or working out as hard as you should be. Another could be that you're just accustomed to a pattern of life that kept weight off when you were younger, and haven't adjusted it to suit your older body. It's impossible for you to not lose weight if you exercise more than your caloric intake. Unless you can prove that your body somehow magically violates the laws of thermodynamics, you will lose weight if you diet and exercise properly.

It can help to make a food journal, and to record the caloric amounts of everything you eat. The calorie counters on exercise machines aren't always entirely accurate, but they are pretty good estimates. If you keep an accurate journal, you might start to see that your occasional indulgences are less infrequent than you think, and that what you're eating might be far more caloric than you thought.

Some areas that have hidden calories include alcohol. If you have any interest in losing weight any time soon, regular consumption of alcohol will make it completely impossible. Your body prioritizes alcohol in the metabolization process, so it focuses on that first and gets to the food later. This makes it so that it's as if you were consuming extra calories that aren't labeled on the alcohol bottles. To boot, it makes you sluggish, so your workouts are less intense and less enjoyable.