According to John A. Schindler, M.D. introduced the powerful concept of EII, or "emotionally induced [[illness]]," long before most physicians were aware of the connection between emotions and physical [[health]]. (1954) <ref>[http://www.goodreads.com/book/show/1127502.How_To_Live_365_Days_A_Year How To Live 365 Days A Year.] (1954)</ref> Similarly, author Patrick Carnes wrote: "Stress becomes traumatic when danger, risk, fear or anxiety is present."<ref>[http://www.amazon.com/Betrayal-Bond-Breaking-Exploitive-Relationships/dp/1558745262/ref=la_B000APLA0E_1_3?s=books&ie=UTF8&qid=1391183476&sr=1-3 The Betrayal Bond, page 3]</ref>
Charles Garfield, the author of peak performance books who worked on the [[Apollo 11]] space mission, says there is no such thing as a stress free life for people with an [[achievement orientation]].<ref>[https://www.youtube.com/watch?v=RpOWLTJPmoY Charles A. Garfield and Peak Performance]</ref> Garfield said, "The only stress free people are dead people. There's no way that you'd want a stress free life."<ref>[https://www.youtube.com/watch?v=RpOWLTJPmoY Charles A. Garfield and Peak Performance]</ref> Garfied, who was familiar with [[sport psychology]], said one should channel stress into performance.<ref>[https://www.youtube.com/watch?v=RpOWLTJPmoY Charles A. Garfield and Peak Performance]</ref> Sport psychologists teach top athletes how to keep a positive mental [[attitude ]] and how to stay mentally calm during their performances.
== Causes of Stress ==