This book is a practical training manual on the technique and methodology of postisometric muscle relaxation (PIRM) of the head, neck, trunk and limbs. Professional masseurs know that not in all cases only with the help of classical massage techniques it is possible to relax the muscle in a state of increased tension. Of all the known varieties of manual muscle relaxation methods, the postisometric relaxation technique (PIR) is considered the most effective and relatively easily reproducible today. It is the basis of the so-called soft manipulation techniques. DST is a completely safe manual exposure technique. The relaxing effect of PIR is practically not realized on clinically healthy muscles, which excludes the side effect of the technique.