Elite fitness trainer Shaun T, who is also responsible for such workouts as Hip Hop abs, has created the insanity workout review. It involves sixty days of workouts that are very intense to give generally great results for everyone who tries this extreme workout!

The way that the actual workouts are formed is using interval training, where the person working will work for a short duration of time, get a rest interval to recover in and then they will work again and this process will be repeated several times. The insanity workout requires the person to work at nearly maximum intensity, up to 90%, for the short intervals and then doing the same again after a rest period.

This method has been proven the most effective way to increase size and strength of the muscles in the body. However, for those people preparing to do or who are already doing the insanity workout, prepare yourself for pain because the great results require pain along the way.