8 Benefits of High-Intensity Interval Training (HIIT)
And why it needs to be part of your regular workout routine
High-intensity interval training (HIIT) describes any workout that alternates between intense bursts of activity and fixed periods of less-intense activity or even complete rest. For example, a good starter workout is running as fast as you can for 1 minute and then walking for 2 minutes. Repeat that 3-minute interval five times for a 15-minute, fat-blasting workout. It sounds too simple to be effective, but science doesn't stretch the truth. Read on for eight proven benefits of this powerful workout:

3. Healthier Heart
Most people aren't used to pushing into the anaerobic zone (that lovely place where you can't breathe and you feel like your heart is trying to jump out of your chest). But in this case, extreme training produces extreme results. One 2006 study found that after 8 weeks of doing HIIT workouts, subjects could bicycle twice as long as they could before the study, while maintaining the same pace.


