Abstract: The Companion is an exercise mat that lies on the floor beneath the TRX Suspension Training System (TRX), and includes visual and/or tactile markings (such as numeric measurements) to indicate the proper placement of feet when exercising with the TRX. The mat facilitates correct placement of the feet in terms of proximity to the TRX anchor point to ensure safe and effective exercise technique and the proper degree of resistance as it pertains to body weight. Contours or ridges may also be provided on the mat in order to facilitate proper foot positioning.