i've been reading about the H.I.I.T for some time now,it is said that u need to train between 8 to 12 minutes 3 times a week with a very moderate diet,and it'll be enought enough to loose around 10 kgs a mnth. so what is H.I.I.T,it is High Intensity Interval Training,with the H.I.I.T the bodies metabolism will be working from 7 to 9 times faster than normal,thus burning more calories. Now what does it consists of? the 1st 3 minutes warming up and running now the 4th minute cosists off sprinting for 30 seconds,than walking for another 30. so is the 5th,6th,7th and 8th minute. Now on the 9th minute u go jogging for a couple of minutes and thats it. Hav'nt tried it yet,wana hear what u hav to say about it. P.S. not recommended to people with high blood pressure or cardiac diseases.