Teamwork is all of the team doing the same work, winning the same matches, losing the same matches and being disciplined together for one person making a mistake. This will make your team bond much quicker and work better together because you'll all try harder not to mess up and be hated etc.
I forgot to mention that the Defensive Line didn't have to do push ups, and when they tried to, the coaches said no. And for the fitness part, I honestly don't care about push ups. They're easy. But it's just consuming time that we can be footballing.