Editing Roger Federer (section)

===Health===
In 1999, the then-18-year-old Federer was discharged from compulsory military service due to a chronic back problem.<ref name=discharged/> Throughout his 20-year career, Federer only conceded three singles walkovers, all due to back injury.<ref name=god/> In March 2008, Federer revealed that he had recently been diagnosed with [[EBV infectious mononucleosis|mononucleosis]] and that he may have suffered from it as early as December 2007.<ref name=mono>{{cite news |url=https://www.nytimes.com/2008/03/08/sports/tennis/08tennis.html?_r=1&oref=slogin |title=Federer's Weakness Might Have Been an Illness |author=Christopher Clarey |work=The New York Times |date=8 March 2008 |accessdate=16 December 2023}}</ref> Despite being cleared to compete, Federer suffered a significant dip in fitness due to his struggle with mononucleosis.<ref name=mono/>

Federer underwent three procedures on his knees, the first two on his left knee, in 2016 and 2020, and the third on his right knee in 2022. When he injured his knee in 2016, Federer underwent knee surgery where a key portion of tissue was removed.<ref name=knees>{{cite web |url=https://www.stoneclinic.com/blog/roger-federer-and-end-athletes-knee |title=Roger Federer and the End of Athlete's Knee |website=www.stoneclinic.com |date=25 September 2022 |accessdate=16 December 2023}}</ref> He was able to return to top-level play for years. However, trimming the meniscus changes the burden on the tibia, which often leads to eventual pain, more surgery, more pain, and retirement.<ref name=knees/> Though it often takes a few years to fully manifest, the surfaces may eventually erode and arthritis may set in. In Federer’s case, different injuries over the years may have combined to take their toll.<ref name=knees/>

Federer employed a multi-faceted training programme that made use of every muscle. That included everything from medicine ball throws to racquet drills.<ref name=workout>{{cite web |url=https://www.sportskeeda.com/health-and-fitness/what-roger-federer-s-matchday-diet-workout-plan |title=What is Roger Federer's Matchday Diet and Workout Plan? |website=www.sportskeeda.com |date=16 September 2022 |accessdate=16 December 2023}}</ref>