Many factors go into the development of a systematic, progressive resistance training program. It is important to consider these factors when creating a program and evaluating clients’ progress through that program. First, before beginning any type of physical training, the client should see a physician. A physical exam performed by a physician will reveal whether an individual thinking of starting a resistance training program is physically ready to do so. The exam may also reveal health conditions that may limit the client. Through the physical exam, the fitness professional may learn the general health history of the client. For a client cleared to begin training, the fitness professional should perform some initial evaluation of physical fitness. This fitness evaluation will indicate strengths and weaknesses of the client. Results of the fitness evaluation should be documented, so that they can be consulted periodically throughout the training program to demonstrate progress in specified areas. Most fitness tests measure flexibility, aerobic capacity, anaerobic capacity, strength, muscular endurance, quickness, body fat, and stability.