How to Lose Weight Fast Firstly, I assume this question is about losing body fat. Your “weight” includes many elements of which body fat is one.
Your percentage body fat will be determined by your past diet, activity levels and your muscle mass.
Losing body fat is about creating a calorific deficit. Using more calories than you ingest. This should be done via managing your diet, being active and building muscle mass.
In general, a person with a greater muscle mass will have a higher basal metabolic rate, so will burn more calories at rest. Having greater muscle mass is one determinant in controlling your body fat as the greater the muscle mass, the greater the calories required to maintain and service that muscle. Muscle mass is developed via exercise and specifically resistance training.
Your activity levels will also affect how many calories you burn as calories fuel the body to perform the activity, so obviously the more active you are, the more calories your body will use. Activity can include any form of movement, from walking, gardening or more formal exercise such as running, sport or going to the gym. The main point is to keep your body moving as much and often as possible.
Finally, the most important component of the calorific equation is ensuring you have a balanced diet, that provides the nutrients your body requires while not providing excess calories. It is said that your diet controls up to 80% of your body fat. So get your diet right and 80% of the issue is dealt with.
As a general rule, opting for foods that are high in nutrients and lower in calories (energy) will assist in fat loss.