WARNING: Corefirst™ Resistance Cords are made from elastic rubber tubing and, like rubber bands, will naturally lose elasticity and break. It is recommended that you replace your Corefirst™ Resistance Cords every 12 months, under normal use (150 workouts or more in a year), to ensure consistent and optimal performance.
As described in the Corefirst™ Trainer Poster, Guidebook, or on our Getting Started page, be certain to anchor your Corefirst™ Trainer to immovable objects only. When attaching to a door, make sure to insert door anchor on the hinge side of the door only (not door knob side). Also, be certain that all three (3) carabiner clips are completely closed and that clips, resistance cords and Corefirst™ wraps are free from any damage, cracks, cuts, nicks, or scrapes before each use.
USE AT YOUR OWN RISK: These disclaimers are for informational purposes only. Consult a physician before performing this or any exercise program. It is your responsibility to evaluate your own medical and physical condition, or that of your clients, and to independently determine whether to perform, use or adapt any of the information or content herein. Any exercise program may result in injury. By voluntarily undertaking any exercise within this guidebook, you assume the risk of any resulting injury.