In the National Football League, training camp refers to the time before the season commences. During this time, teams will sometimes congregate at an outside location, usually a university, to conduct training camp for at least the first few weeks. This is similar to baseball's spring training.
Training camp is used in several different ways. New players and coaches use it to acclimate themselves to new teammates and systems. For younger players, it serves as a period of evaluation; for veterans, it is time to round back into form.
Training camp is divided into several different components. The first is scrimmages. These are pseudo-games where teams run nearly full games' worth of plays. Sometimes, two practice sessions are held on the same day. This concept is referred to as two-a-days. Other parts of training camp include drills, meetings with coaches and other players at one's position, weight training, and pre-season games.
The latter half of training camp leads directly into the exhibition season.
With NFL training camps starting in late-July, the biggest concern has been dehydration. In 2001, Minnesota Vikings player Korey Stringer died of a medical condition based from dehydration and heatstroke. The death of Stringer prompted the NFL to change their training policies. At each practice, every team must have the team doctor and trainers on the field; additionally, an ambulance must be present during practices.
With NFL training camps beginning in late July, severe weather can affect practice and exhibition games. In 2002, a Cleveland Browns exhibition game ended due to lightning near Cleveland Browns Stadium, and severe storms have been known to disrupt training camps.
Fans are often able to visit their favorite team's training camp to catch an early look at the players; admission to practices is often free or substantially less expensive than a game ticket, making training camp trips a popular option for fans who cannot attend many games due to financial or other reasons. NFL teams often sell souvenirs and concessions at camp sites along with offering activities and events to make training camp a more fan-friendly experience.