Metabolism is the modification of oxygen and calories to energy. Every cell in the body imposes upon thyroid hormones for adjustment of metabolism. It is not so well known that nicotine tends to hike the metabolic rate, which is one of the speculations why some people gain weight when they quit smoking. Metabolism is a lot of of chemical reactions that takes place in the body's cells to convert the fuel in the food we eat into the energy necessitated to power all of the things we do, from moving to thinking to growing. Definite proteins in the body control the chemical reactions of metabolism, and every chemical reaction is coordinated with other body functions.

Exercise reduces body fat and increases lean muscle mass. Aerobic exercise, like walking or cycling, has the added bonus of speeding up your metabolism for 4-8 hours after you stop exercising. Exercise builds muscle and this requires the body to use up more energy than fat tissue. Exercise, food, and environmental temperature influence metabolism. Basal metabolism is the caloric expenditure of an organism at rest; it represents the minimum amount of energy required to maintain life at normal body temperature.

Calories expended to cover these basic functions are your basal metabolic rate BMR. Typically, a person's BMR is the largest portion of energy use, representing two-thirds to three-quarters of the calories used each day.

One of the main reasons for regaining weight after dieting or fasting, has to do with protein and related replacements of fluids, Hence it is always important to keep well hydrated during a diet or even when just trying to lose weight naturally be lessening the food you would normally eat.Water is always re-established once your metabolism reverts to normal behaviour , and fat loss is not the same as weight loss, there is a subtle difference. Protein is absolutely necessary in a diet , and is a contributor to the loss of fat as well as a way to stop it from coming back immediately.

Eating small frequent meals will prevent you from getting really hungry and binge eating or eating foods that aren't good for you. It's much easier to make healthy food choices when you're not famished. Eating more really can help you lose weight -- eating more often, that is. When you eat large meals with many hours in between, you train your metabolism to slow down. Eating a tablespoon of chopped red or green chili pepper can temporarily boost your metabolic rate by up to 25 percent. Some studies suggest the effect only lasts about half an hour, but if you eat spicy foods often, the benefits may add up.

Generally speaking, aerobic activities like running burn more calories than strength building activities like weight lifting.The basal metabolic rate will take care of the rest. You must remember it is important to note that muscle burns calories, while fat does not. If you need to alter your weight , use these few factors and see the change!