Boosting your metabolism is a term that gets thrown around a lot, but what is really means is improving your metabolic rate: how much energy/calories you burn in a day.
No matter your metabolic rate, there are expert-approved ways to speed it up. Three effective ways to boost your metabolism for long-term results are to eat more healthy fats and protein, and to strength train. Eating more healthy fats makes it difficult for your body to process them, and as a result, your body will expend more energy (calories) as it breaks it down. By increasing your protein intake, your body will also have to work harder to digest, break down, and store it.
Weightlifting is one of best ways to build muscle, and as a result, improve your metabolic rate. Because muscle is more metabolically active than fat, the more muscle you have, the more calories you'll burn in a day. There's one caveat: "It's very difficult to increase your muscle mass," Dr. Arad told POPSUGAR. To build muscle you're going to have to work extremely hard. "The increase in the amount of energy that the body burns as a result of your muscle mass is certainly important, but it's somewhat small," he said. "For every one pound increase in muscle mass, there is an increase of about seven calories burned a day," Dr. Arad explained.