Jerick McKinnon has a leg up on the other new 49ers: He's already painfully familiar with the kind of inclined running hill the team installed last offseason and which was the bane of every rehabbing and not-quite-in-tiptop-shape player last year.
McKinnon's been working on a similar, 40-degree incline hill at a gym in Houston that belongs to one-time teammate and mentor Adrian Peterson. The 35,000-square-foot facility features an artificial hill, a sand running course and a boxing facility, all of which are put to use in Peterson's famously grueling 3 1/2 hour, offseason workouts.
"The hill work gets you right -- that incline!