Do you eat a lot more when you have a high metabolism?

All things being equal, yes. The higher your degree of cardiovascular fitness, the higher your metabolic rate. The higher your metabolic rate, the more calories you can consume without gaining body fat. It is also important to realize that it's not just increasing your degree of cardiovascular fitness that can enable you to eat more: increasing your amount of muscle has the same result. Muscle is your METABOLIC FURNACE, which burns additional calories 24 hours a day. This is why large, male bodybuilders often eat 4000, 5000, 6000 or even more calories daily! So, if you want to eat more without getting fat, increase both your degree of cardiovascular fitness and your muscle. ---- To learn about the foods that boost metabolism, see the page link, further down this page, listed under "Related Questions."