The key to losing weight is simple, you must burn more calories than you consume. Your body needs a certain baseline number of calories simply to carry out its normal day to day activities. If it isn’t getting those calories in your diet, it will start to burn off your reserves (that is, your fat.)
The traditional approach to losing weight is simply eating less that way, your body is taking in fewer calories than it burns. If you exercise, your body burns more calories, also shifting this balance so that you start burning your reserves.
However, the best approach is combining these with an approach designed to increase metabolism to lose weight.
There are two ways you can increase your metabolism:
In regards to exercise, aerobic exercise (that is, cardio) will boost your metabolism temporarily, burning more calories while you exercise. Meanwhile, weight training will boost your metabolism in the long run, since your increased muscle mass will require a constant source of energy in your day to day activities.
Exercising regularly will definitely boost your metabolism, in both cases, although cardiovascular exercise tends to give more immediate results.
Consuming foods that can help your metabolism burn more calories.
While there are no magic foods that can increase your metabolism, there are foods that require more energy in order to be digested. The best of these are foods high in protein and foods high in dietary fiber. These have the advantage of helping you stay healthy and often carrying other nutrients.
The downside of most high protein foods is that they will often be accompanied with a high dose of saturated fats.
Some examples of foods that are high in protein while low in bad fats include legumes (especially lentils) and salmon (which is also high in beneficial omega-3 fatty acids.) For a good source of dietary fiber that can boost your metabolism, look to whole grains such as oats or bran cereals.
One surefire way to boost your metabolism is to drink plenty of ice water, as the cold in the water requires energy from the body in order to raise its temperature.