In this brief introduction to the art of relaxation, Ursula Darkins explains how the ability to relax requires one to become receptive; this effectively means learning to control the habits of tension which one develops as a result of the capacity for rational thought. From the ability to be receptive naturally arises the ability to concentrate, since concentration is a passive function, although it is rarely understood as such. Darkins concludes by discussing the relationship between degress of tension in the mind and the body.