The power of asanas manifests only once one stays in them for sufficiently long time. In the case of forward extensions, what manifests is extreme quietness and inward-liness.
This Short Course ends in long holds in seated forward extensions without any props. The preparation for this is done with a certain theme that is introduced in the first session, and progressively re-inforced as well as refined to make the final experience rich. Interestingly, the preparatory sessions do not have too many forward extensions