Last year, in HBO's documentary series State Of Play, director Peter Berg examined the dynamic of parents who become obsessed with the success of their kids in sports. Now, in another installment, Berg looks at the other end of the athletic career arc, retirement. In a segment that premieres 10 p.m. ET/PT Tuesday, Berg explores the search for happiness after football with Brett Favre, Tiki Barber and Wayne Chrebet. Here's a preview:

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