Stride Length – The distance covered with each stride.

Tendonitis – An inflammation in a tendon or tendon covering.

http://www.wmur.com/special-reports/injuries-from-popular-fitness-trend-can-be-avoided/29780300

http://www.wftv.com/news/news/local/man-told-change-or-leave-planet-fitness-after-wear/nh83R/

http://www.cnet.com/news/fitness-band-market-to-shrink-amid-apple-watch-effect/

http://qctimes.com/news/local/crime-and-courts/woman-files-suit-against-planet-fitness-over-hidden-camera-case/article_6ce13cba-2f18-5354-a55a-05dc093dbf4b.html

Davis’s Law- States that soft tissue remodels along the lines of stress.

http://www.webmd.com/news/20141117/every-kiss-begins-with-80-million-germs

http://www.washingtonpost.com/sports/colleges/brooklyn-des-moines-to-host-2016-ncaa-games/2014/11/17/9cb926a2-6e87-11e4-a2c2-478179fd0489_story.html