Factors Affecting Muscular Strength

I am often asked why one person develops strength and muscle faster than another when
 he or she is performing the same exercises and following a similar strength training workout program.
 Many people feel that they must be doing something wrong because they aren’t getting the same results,
muscular strength or muscular development as another person. It’s important to realize that there are six primary factors affecting every individual’s
ability to achieve strength and muscle development, and we have little or no control over most of them.