It's good to note that team tryouts vary in structure, and they may take place in stages over several weeks so that the coaches can assess initial fitness levels and observe any improvement. The Iowa Xplosion women's team makes recruits run a 40-yard dash at every tryout to see if hopefuls maintain or improve. Staggered tryouts show the coaching staff whether you're working out on your own between sessions [source: Axline].
Some teams will want to test your endurance, so they may ask you to run 1 to 2 miles (1.6 to 3.2 kilometers) without stopping.
If the team you're trying out for has an informational session, ask what cardio levels the coaches are looking for and how they will assess recruits.
Strength training and cardio are just two aspects of physical fitness, but there's one other physical skill that good football players have: You'll have to explode.