There are many workout, muscle building programs available online these days and the Insanity Workout is one of them. It is said by one fitness site to be one of the hardest and extreme ones there are. The package consists of 10 hardcore workouts on DVD, a nutrition plan, a fitness guide, the Insanity Calendar and various support tools available online.

The program was devised by Shaun T, a former dancer with a BS in Sports Science, and is said to transform your body in just 60 days. He uses a technique called MAX Interval Training, which is a mixture of aerobic and anaerobic exercise alternated to keep your body busy all the time.

In these exercises, you do not need weight training equipment or gym equipment so they are easy to do at home. At a maximum of an hour a day, they are intensive, but easy to fit into a busy regime. The program costs $119.85 and comes with a 30-day money back guarantee.