A contraindication is a specific situation in which a drug, procedure, or surgery should not be used because it may be harmful to the person.
 
Cautions & Contraindications for use of DynX Exercise protocols are:  heart or circulatory conditions which would prohibit the use of any cardio exercise training equipment.  Heart valve issues, aneurisms, irregular heart rhythm problems are examples.  Arthritis, carpel tunnel, pain from skeletal damage or tendonitis are reasons to avoid use of these or other similar hand-arm exercise regimens without physician authorization.

Designed and manufactured

in the United States