To lose fat, the body must burn more calories than it takes in. Physical activity is important for fat loss. Some people try to lose weight by dieting alone. One-third of the weight they lose can be muscle. Exercise builds muscle.
Muscle burns fat for fuel when the body is at rest and during exercise.
Exercise maintains permanent fat loss. Build exercise into your daily routine. The more activity you get throughout the day, the more calories will be burned. Walking a mile briskly burns about 100 calories. Permanent fat loss is a slow process.