Exercise and physical activity are not only good for you, they're also a fun way to spend time — a chance to unwind, to be outdoors, to get social or to simply do something that makes you happy. Find a physical activity you enjoy and do it every day.
Better yet, find two or more types of activity to do to prevent boredom and overuse injuries. Pace yourself according to your age and fitness level. Start with a warm up and end with cool down. Increase time and intensity gradually. Consider exercising with a committed friend or involve your family.
A good general goal is to get at least 30 minutes of physical activity daily. If you want to lose weight or increase your fitness level, you may need more exercise or at a higher intensity. Bottom line, all movement counts, not just exercise.