Incorporate high-intensity interval training (HIIT) into your routine to burn more calories in a shorter amount of time, as opposed to long, slow endurance exercise.
How to do it: Choose any piece of cardio equipment (elliptical, jump rope, treadmill, bike, etc) and repeat the following pattern 10 times total:
3 minutes at 50 percent of your maximum effort
20 seconds at 75 percent of your maximum effort
10 seconds at your absolute maximum effort