Injuries. Everyone gets them; everyone hates them - but everyone has to deal with them, especially sports stars.
Professionals pick up injuries often - an innocuous challenge in football, for example, can lead to a player sustaining a serious ankle sprain and face up to six weeks on the treatment table.
However, some sports stars are far more injury prone than others, as these five suggest.
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The Arsenal midfielder has endured an injury-plagued career since joining the Gunners in 2008, spending approximately 485 days and 60 matches on the sidelines.
A broken tibia and fibula suffered in 2010 as a result of Ryan Shawcross' horrific challenge saw Ramsey spend over 250 days out, though the Welshman has consistently recovered to become one of the Premier League's finest central players.
Robert Griffin III
Griffin, 24, plays quarterback for the Washington Redskins and is without question one of the unluckiest players in the NFL.
The American has suffered a total of six injuries in as many years, two of which involving his head whereby he had to leave the field of play.
Griffin's knees has given him particular trouble, specifically his right. He tore his anterior cruciate ligament in 2009 whilst at college and again in 2012, where he needed surgery.
One of golf's greatest ever players, 14-time major champion Woods has enjoyed an illustrious career but suffered his fair share of time out injured.
The 40-year-old has endured 23 injuries over an 11-year period and undergone six surgeries, with chronic back pain a persistent problem.
A player renowned more for his injuries than his football ability, Wilshere is another Arsenal player to have largely wasted away on the sidelines.
Is it the Gunners' training methods that see so many players suffer injuries? Is it their medical staff? Whatever the problem, it continues to haunt them season after season.
To date, England international Wilshere has spent an incredible 862 days out due to various injuries, mainly to his ankles, and missed out on 150 games. He's still only 24.
The 14-time Grand Slam champion dominated tennis between 2008 and 2012, winning nine of those at the French Open.
As a result of his famed aggressive game, Nadal has spent lengthy periods of his career injured. In 2009, the Spaniard lost his number one ranking in the world as a result of tendonitis in his knees.
Nadal came back stronger in 2010, yet injuries have continued to plague his career and the 29-year-old now finds himself fifth in the ATP rankings and attempting to re-establish himself as one of tennis' dominant forces.