Vikings running back Adrian Peterson is 28, with six seasons under his belt. The reigning MVP told the Star-Tribune he hasn't given any thought to the fact that running backs typically decline as they approach 30. “I feel like me not realizing that helps me,†Peterson said. “Me not thinking about, ‘Well, my clock is starting to tick, getting older and older.’ That’s not doing nothing but hurting me. So I’m thinking in my mind that each year I’m getting younger. Any way I can look at it with the most positive view that’s going to help me, that’s the way I’m looking at it.†Peterson has set a goal of 2,500 rushing yards after running for 2,097 last year. Source: CBS Sports