After brain, musculoskeletal system is the second biggest system that burn calories for an average human being. Burning calories directly means losing weight. Therefore, moving more than average helps eventually to lose weight. People moving less are likely to be overweighed as observed. Best and easy way to keep ourselves moving is walking. We should prefer walking rather than driving for short or even mid ranges in our daily life. In a year, walking daily 15 minutes can burn more than extra 4 pounds. You can use stairs rather than escalators and make it as a habit. You should see the difference.