Graft-versus-host disease can occur when the donor's cells are recognized by the patient's (host's) body as foreign. To prevent graft-versus-host disease and graft rejection, medications are usually given to the patient for the first 3-6 months following transplantation.
Levels of many toxins, pollutants have been lowered since 1990, according to the agency
Staff qualifications. All clubs have weight machines, cycles and steppers, but do they have the staff that can help you use them properly?
Price. The less money you make, the more important this will be.
Variety. Your club should provide enough choices so that you avoid a rut and work different muscles.
Lifesavers. Does the club have anyone trained in cardiopulmonary resuscitation and other lifesaving techniques? For that matter, does the club check on your health? Does the club have a defibrillator?
Escape hatch. Your membership agreement should include a "cooling off" period that lets you cancel within a certain time without penalty. The standard is three days.