After the body has been stimulated by preforming the standing series, a two minute savasana is preformed to heal the body. Savasana is one of the most important parts of a hatha-yoga practice and it is often said that this is where the "magic" happens in the Bikram Yoga series. That magic is the healing that is created by the stillness of the pose. When the body is still the circulatory system is unobstructed and delivers oxygen, nutrients and white blood-cells to where it is needed. These materials are the building blocks of healing, which creates the therapeutic benefit of this pose.
The sit-up serves to invigorate the body in between poses. A quick stretch to the hamstrings, it helps to prepare and open the lower back and legs for the final stretching pose at the end of class. More importantly the double-exhale helps to release toxins from the lungs helping to energize the body in between the poses.