When you hit a plateau in your weight loss, try adding a few higher intensity bursts or intervals to your cardio workouts. This elevates your heart rate, makes you work harder and burns more calories to help shock your body and jump start your weight loss again!
During your normal cardio workout, exercise at your usual intensity level. A few times during your workout, bump it up for 10-60 seconds, by going faster, harder or against heavier resistance or incline. Then bring the intensity back down as long as you need to in order to recover and try again.