Jillian Michaels is a well-known fitness trainer in the United States, which has helped millions of women worldwide to lose weight and tone your body is using the exercises you posted on youtube.
At the age of 41, Jillian we recommend a series of exercises extremely effective abdominal area. This level, for beginners, is designed to burn fat, accelerate metabolism, its thin waist and work at the same time more muscle groups.
Do not make the mistake of skipping heating and relaxation! If you are a beginner, look how young execute the exercises right, dressed in blue - it will look more simple and easier.