See, that's the thing about Belichick, who in the last decade has unquestionably become one of the greatest coaches to ever walk the sidelines. When everyone else is sleeping, or tweeting, or playing Madden, or lounging around, Belichick is studying the game, whether it's that week's opponent or one of his old playoff itineraries. He is always working to implement improvements for the good of his team's success, and he's always been willing to adjust something he thought he once screwed up.
That's why his players follow him and fight for him. They believe in Belichick -- that he has put in the work that week to study every last detail to put them into position to maximize their ability.
"You see his work ethic," Patriots captain Jerod Mayo says, "and if you try to match it, you might not make it a couple days. He's always working."
"At the end of the day," Mayo says, "you'll run through a wall for coach Belichick."