This is worth a watch. Particularly around the 30 minute mark. They explain the science and show you the results of how to turn yourselves into a “fat burning machine”.
The answer is essentially an INSANITY class – 2 minutes hard work, rest and repeat.
That’s how you burn fat for hours afterwards. Not weight, FAT! That’s what will change your body shape, that’s what will keep you healthy, losing FAT.
Watch it and then get yourself to INSANITY! 🙂
Gotta love a bit of Science!!