Looking to give your cardio routine a boost?  Try HIIT...high intensity interval training!
You can burn more calories in less time if you do short bursts of high intensity cardio followed by a rest and then repeat.
Try this on any piece of cardio equipment you have...it can be an elliptical, stationary bike or treadmill.
Warm up for 5 minutes

• at the 5 minute mark do 30 seconds as fast as you can (intensity level of 8 to 9, where 10 is your max and you are breathless)
• then go back to an easy pace (5-6 intensity level) and catch your breath for 1 minute and 30 seconds
• at the 7, 9, 11, 13, 15, 17, 19, 21 minute marks do your 30 second sprints
• after your last sprint at 21 minutes, cool down for 4-5 minutes at an easy pace
• that should bring you to 25 to 26 minutes

If you don't have a lot of time to work out...and let's face it, who does?? This workout will save you time and allow you to burn just as many calories as if you had spent double that time on the cardio machine going at an easy pace (5-6 intensity level)

Give it a try!!!