Variety to Routine

If you’re looking to burn a lot of calories in a short period of time, then high-intensity interval training (HIIT) might be the way to go!
HIIT involves brief but intense intervals of anaerobic exercise that are broken up by periods of rest to help your body most effectively use its energy. Depending on your skill level, you can choose to exercise for 30 seconds then rest for 30 seconds, or modify those intervals to what works best for you. To increase the difficulty level, simply shorten the rest period and/or lengthen the workout period.
A few popular examples of HIIT exercises include: jumping rope, mountain climbers, high knees, squat jumps and push-ups. One big benefit is that many of these options don’t require any equipment, so you can easily do your workout inside your home or backyard. A good guideline to tell if your workout is as “intense” as it should be is to exercise at 70% of your maximum heart rate. Click here for some tips on determing your target heart rate.
By keeping the exercises varied and the time limit short, you’re much less likely to get bored than with other forms of exercise. Plus, research has shown that by consuming oxygen quickly during HIIT workouts, your body could burn more calories than say running. Click here for some sample workout plans.
Source: Health Fitness Revolution