An elongate mat has a surface upon which are located a plurality of indicia for guiding placement of one or more parts of a user's body when performing a plurality of yoga postures thereon. The anatomical measurements of the parts of the user's body determine the location of the plurality of indicia on the mat. There is also provided a method of performing exercises upon the mat, a method of forming a plurality of indicia on or in the mat, and a computerized system for manufacture of a mat.